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Finding the Third Proportional to 8,860 and 18,638

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Solution

The third proportional to 8,860 and 18,638 is: 39,207.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860 : 18,638 = 18,638 : x
  2. Step 2: Convert to fraction form
    8,860/18,638 = 18,638/x
  3. Step 3: Cross multiply
    8,860x = 18,638 × 18,638
  4. Step 4: Simplify right side
    8,860x = 347,375,044
  5. Step 5: Solve for x
    x = 347,375,044/8,860
  6. Step 6: Final answer
    x = 39,207.12

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.