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Finding the Third Proportional to 18,882 and 39,906

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Solution

The third proportional to 18,882 and 39,906 is: 84,338.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882 : 39,906 = 39,906 : x
  2. Step 2: Convert to fraction form
    18,882/39,906 = 39,906/x
  3. Step 3: Cross multiply
    18,882x = 39,906 × 39,906
  4. Step 4: Simplify right side
    18,882x = 1,592,488,836
  5. Step 5: Solve for x
    x = 1,592,488,836/18,882
  6. Step 6: Final answer
    x = 84,338.99

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.