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Finding the Third Proportional to 18,666 and 38,916

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Solution

The third proportional to 18,666 and 38,916 is: 81,134.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666 : 38,916 = 38,916 : x
  2. Step 2: Convert to fraction form
    18,666/38,916 = 38,916/x
  3. Step 3: Cross multiply
    18,666x = 38,916 × 38,916
  4. Step 4: Simplify right side
    18,666x = 1,514,455,056
  5. Step 5: Solve for x
    x = 1,514,455,056/18,666
  6. Step 6: Final answer
    x = 81,134.42

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.