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Finding the Third Proportional to 10,813,470 and 15,117,957

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Solution

The third proportional to 10,813,470 and 15,117,957 is: 21,135,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,813,470 : 15,117,957 = 15,117,957 : x
  2. Step 2: Convert to fraction form
    10,813,470/15,117,957 = 15,117,957/x
  3. Step 3: Cross multiply
    10,813,470x = 15,117,957 × 15,117,957
  4. Step 4: Simplify right side
    10,813,470x = 228,552,623,853,849
  5. Step 5: Solve for x
    x = 228,552,623,853,849/10,813,470
  6. Step 6: Final answer
    x = 21,135,918.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.