What available credit to income ratio do credit cards look for?

like american express. what's the ratio they look for? how much income do you have and the available credit limit you have. what percentage do they look for? say you have 10,000 of credit limit. how much income are they expecting you to have if you have that much money. i just want to know when i'll meet the ratio so i can apply again when i meet their ratios.|||That is dependent on the company. I think you are asking a proprietary question that each company would answer differently, if at all.