21.75 is what percent of 747.8 - 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 747.8 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 747.8, so we can write it down as 100%=747.8.
4. We know, that x% equals 21.75 of the output value, so we can write it down as x%=21.75.
5. Now we have two simple equations:
1) 100%=747.8
2) x%=21.75
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%=747.8/21.75
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 21.75 is what percent of 747.8

100%/x%=747.8/21.75
(100/x)*x=(747.8/21.75)*x       - we multiply both sides of the equation by x
100=34.381609195402*x       - we divide both sides of the equation by (34.381609195402) to get x
100/34.381609195402=x
2.908531692966=x
x=2.908531692966

now we have:
21.75 is 2.908531692966% of 747.8