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Finding the Third Proportional to 21,972 and 29,934

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Solution

The third proportional to 21,972 and 29,934 is: 40,781.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972 : 29,934 = 29,934 : x
  2. Step 2: Convert to fraction form
    21,972/29,934 = 29,934/x
  3. Step 3: Cross multiply
    21,972x = 29,934 × 29,934
  4. Step 4: Simplify right side
    21,972x = 896,044,356
  5. Step 5: Solve for x
    x = 896,044,356/21,972
  6. Step 6: Final answer
    x = 40,781.19

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.