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Finding the Third Proportional to 20,261 and 29,406

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Solution

The third proportional to 20,261 and 29,406 is: 42,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261 : 29,406 = 29,406 : x
  2. Step 2: Convert to fraction form
    20,261/29,406 = 29,406/x
  3. Step 3: Cross multiply
    20,261x = 29,406 × 29,406
  4. Step 4: Simplify right side
    20,261x = 864,712,836
  5. Step 5: Solve for x
    x = 864,712,836/20,261
  6. Step 6: Final answer
    x = 42,678.68

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.