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Finding the Third Proportional to 21,583 and 29,161

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Solution

The third proportional to 21,583 and 29,161 is: 39,399.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,583 : 29,161 = 29,161 : x
  2. Step 2: Convert to fraction form
    21,583/29,161 = 29,161/x
  3. Step 3: Cross multiply
    21,583x = 29,161 × 29,161
  4. Step 4: Simplify right side
    21,583x = 850,363,921
  5. Step 5: Solve for x
    x = 850,363,921/21,583
  6. Step 6: Final answer
    x = 39,399.71

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.