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Finding the Third Proportional to 8,729,939 and 13,215,693

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Solution

The third proportional to 8,729,939 and 13,215,693 is: 20,006,387.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729,939 : 13,215,693 = 13,215,693 : x
  2. Step 2: Convert to fraction form
    8,729,939/13,215,693 = 13,215,693/x
  3. Step 3: Cross multiply
    8,729,939x = 13,215,693 × 13,215,693
  4. Step 4: Simplify right side
    8,729,939x = 174,654,541,470,249
  5. Step 5: Solve for x
    x = 174,654,541,470,249/8,729,939
  6. Step 6: Final answer
    x = 20,006,387.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.