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Finding the Third Proportional to 18,876 and 20,532

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Solution

The third proportional to 18,876 and 20,532 is: 22,333.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876 : 20,532 = 20,532 : x
  2. Step 2: Convert to fraction form
    18,876/20,532 = 20,532/x
  3. Step 3: Cross multiply
    18,876x = 20,532 × 20,532
  4. Step 4: Simplify right side
    18,876x = 421,563,024
  5. Step 5: Solve for x
    x = 421,563,024/18,876
  6. Step 6: Final answer
    x = 22,333.28

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.