7.21 is what percent of 13.99 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 13.99 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 13.99, so we can write it down as 100%=13.99.
4. We know, that x% equals 7.21 of the output value, so we can write it down as x%=7.21.
5. Now we have two simple equations:
1) 100%=13.99
2) x%=7.21
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=13.99/7.21
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 7.21 is what percent of 13.99

100%/x%=13.99/7.21
(100/x)*x=(13.99/7.21)*x       - we multiply both sides of the equation by x
100=1.9403606102635*x       - we divide both sides of the equation by (1.9403606102635) to get x
100/1.9403606102635=x
51.536812008578=x
x=51.536812008578

now we have:
7.21 is 51.536812008578% of 13.99