Some economic conversion factors... for later
I googled up cost of living in Mumbai India, just because I wanted to make a point. Here's a simple index:
1 Bedroom City Center apartment: 36,000Rs/mo = $530/mo
Utilities for that apartment: 2960 Rs/mo = $43/mo
90 meals at inexpensive restaurant = 21,600Rs/mo = $316/mo
Total cost of basic subsistence ~ $900/mo.
1 Bedroom apartment: $1500/mo
Utilities for that apartment: $250/mo
90 meals at inexpensive restaurant = $900/mo
Total cost of basic subsistence ~ $2650/mo
Basic requirements for life (food and shelter) cost 3x as much in Los Angeles as Mumbai
EDIT: Also we should take into account income tax. In the US an individual making $2650 / mo after taxes ($31800/yr) needs to be getting a salary of close to $37650 which is the upper border of the 15% tax bracket, and puts their marginal tax rate for additional earnings at 25% (the next bracket). And that's ignoring state taxes. Let's just call it something like $40k
In India, I don't know much about the tax system, but from wikipedia we can approximate things as needing to make 727k Rs/yr and if I'm reading the clearly broken wikipedia table right that'd be taxed around 13%. So you'd need to make something like 865k Rs = $13,000/yr
40/13 = 3.08 so the main point still holds, it's 3x more expensive to subsist in LA.