Question

complete the ratio table.
13 18
26 36
39
52
65

Explanation:

Step1: Find the ratio factor

$\frac{18}{13}$ (or confirm scaling: $26=13\times2$, $36=18\times2$, so scale factor is $\frac{18}{13}$)

Step2: Calculate 39's paired value

Multiply 39 by $\frac{18}{13}$: $39\times\frac{18}{13}=3\times18=54$

Step3: Calculate 52's paired value

Multiply 52 by $\frac{18}{13}$: $52\times\frac{18}{13}=4\times18=72$

Step4: Calculate 65's paired value

Multiply 65 by $\frac{18}{13}$: $65\times\frac{18}{13}=5\times18=90$

Answer:

13	18
39	54
52	72
65	90

The missing values are 54, 72, and 90 respectively.