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Finding the Third Proportional to 20,601 and 27,981

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Solution

The third proportional to 20,601 and 27,981 is: 38,004.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601 : 27,981 = 27,981 : x
  2. Step 2: Convert to fraction form
    20,601/27,981 = 27,981/x
  3. Step 3: Cross multiply
    20,601x = 27,981 × 27,981
  4. Step 4: Simplify right side
    20,601x = 782,936,361
  5. Step 5: Solve for x
    x = 782,936,361/20,601
  6. Step 6: Final answer
    x = 38,004.77

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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.