Ratio Calculator Tool

Ratio Calculator Tool is not a calculator as we know it. It is designed only for calculating proportions. It simply gets you the value of [?] in this equation: "If X Foo equals to Y bla, then Z Foo equals to [?] bla" It works for 2 ways of proportions: Direct and inverse. For example when you make a calculation about prices, the result usually increases like this: If 2 apples cost 10 bucks, 5 apples cost how many bucks? The app finds 25 bucks here (which is greater than 10). But when you make a calculation for ex. about speed, the result decreases like this: If 3 workers finish the job in 15 days, 9 workers will finish in how many days? The app finds 5 days here (which is less than 15). Simple, but useful.