Finding the Fourth Proportional to 12,478,701.70, 18,690,058.95 and 10,239,213.70
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Solution
The fourth proportional to 12,478,701.70, 18,690,058.95 and 10,239,213.70 is: 15,335,850.82
Step by Step Solution
- Step 1: Write the proportion equation
12,478,701.70 : 18,690,058.95 = 10,239,213.70 : x - Step 2: Convert to fraction form
12,478,701.70/18,690,058.95 = 10,239,213.70/x - Step 3: Cross multiply
12,478,701.70x = 18,690,058.95 × 10,239,213.70 - Step 4: Simplify right side
12,478,701.70x = 191,371,507,654,647.59 - Step 5: Solve for x
x = 191,371,507,654,647.59/12,478,701.70 - Step 6: Final answer
x = 15,335,850.82
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.