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Finding the Third Proportional to 17,917 and 38,902

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Solution

The third proportional to 17,917 and 38,902 is: 84,465.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,917 : 38,902 = 38,902 : x
  2. Step 2: Convert to fraction form
    17,917/38,902 = 38,902/x
  3. Step 3: Cross multiply
    17,917x = 38,902 × 38,902
  4. Step 4: Simplify right side
    17,917x = 1,513,365,604
  5. Step 5: Solve for x
    x = 1,513,365,604/17,917
  6. Step 6: Final answer
    x = 84,465.35

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.