Answer
a=18
Work Step by Step
In order to solve for x in the equation $\frac{3}{a}$=$\frac{1}{6}$ we will apply the Cross Products Property of a Proportion that says that if
$\frac{x}{y}$=$\frac{h}{g}$, where y$\ne$0 and g$\ne$0, then xg=hy. If we set x=3, y=a, h=1, and g=6, then we'll apply this property.
(3)(6)=(1)(a)
a=18
