Finding the Fourth Proportional to 15,001,688.97, 20,702,430.09 and 8,126,170.92
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Solution
The fourth proportional to 15,001,688.97, 20,702,430.09 and 8,126,170.92 is: 11,214,169.66
Step by Step Solution
- Step 1: Write the proportion equation
15,001,688.97 : 20,702,430.09 = 8,126,170.92 : x - Step 2: Convert to fraction form
15,001,688.97/20,702,430.09 = 8,126,170.92/x - Step 3: Cross multiply
15,001,688.97x = 20,702,430.09 × 8,126,170.92 - Step 4: Simplify right side
15,001,688.97x = 168,231,485,370,690.97 - Step 5: Solve for x
x = 168,231,485,370,690.97/15,001,688.97 - Step 6: Final answer
x = 11,214,169.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.