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Finding the Third Proportional to 8,681 and 18,442

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Solution

The third proportional to 8,681 and 18,442 is: 39,178.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681 : 18,442 = 18,442 : x
  2. Step 2: Convert to fraction form
    8,681/18,442 = 18,442/x
  3. Step 3: Cross multiply
    8,681x = 18,442 × 18,442
  4. Step 4: Simplify right side
    8,681x = 340,107,364
  5. Step 5: Solve for x
    x = 340,107,364/8,681
  6. Step 6: Final answer
    x = 39,178.36

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.