4.2 is what percent of 28000 - 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 28000 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 28000, so we can write it down as 100%=28000.
4. We know, that x% equals 4.2 of the output value, so we can write it down as x%=4.2.
5. Now we have two simple equations:
1) 100%=28000
2) x%=4.2
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%=28000/4.2
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 4.2 is what percent of 28000

100%/x%=28000/4.2
(100/x)*x=(28000/4.2)*x       - we multiply both sides of the equation by x
100=6666.6666666667*x       - we divide both sides of the equation by (6666.6666666667) to get x
100/6666.6666666667=x
0.015=x
x=0.015

now we have:
4.2 is 0.015% of 28000