19.98 is what percent of 215.89 - 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 215.89 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 215.89, so we can write it down as 100%=215.89.
4. We know, that x% equals 19.98 of the output value, so we can write it down as x%=19.98.
5. Now we have two simple equations:
1) 100%=215.89
2) x%=19.98
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%=215.89/19.98
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 19.98 is what percent of 215.89

100%/x%=215.89/19.98
(100/x)*x=(215.89/19.98)*x       - we multiply both sides of the equation by x
100=10.805305305305*x       - we divide both sides of the equation by (10.805305305305) to get x
100/10.805305305305=x
9.2547130483116=x
x=9.2547130483116

now we have:
19.98 is 9.2547130483116% of 215.89