The unknown value is 4
We use Ratios to compare two quantities. So, those quantities or measurements are called the terms of the ratio. Unit rate is a special ratio in which these two terms are given using different units. For example, if you have the speed of a car, you can measure it in:
[tex]m/s \\ \\ km/h \\ \\ mi/h[/tex]
In this case, we have the following proportion:
[tex]\frac{x}{16}=\frac{3}{12}[/tex]
So our goal is to isolate x:
[tex]Multiply \ both \ sides \ by \ 16: \\ \\ 16\times \frac{1}{16}=16\times \frac{3}{12} \\ \\ \therefore \boxed{x=4}[/tex]
Finally, the unknown value is 4
Direct and inverse proportionality: https://brainly.com/question/10945121
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