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Finding the Third Proportional to 8,538,781.13 and 13,207,177.88

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Solution

The third proportional to 8,538,781.13 and 13,207,177.88 is: 20,427,921.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538,781.13 : 13,207,177.88 = 13,207,177.88 : x
  2. Step 2: Convert to fraction form
    8,538,781.13/13,207,177.88 = 13,207,177.88/x
  3. Step 3: Cross multiply
    8,538,781.13x = 13,207,177.88 × 13,207,177.88
  4. Step 4: Simplify right side
    8,538,781.13x = 174,429,547,421,889.50
  5. Step 5: Solve for x
    x = 174,429,547,421,889.50/8,538,781.13
  6. Step 6: Final answer
    x = 20,427,921.14

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.