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Finding the Third Proportional to 8,668 and 13,138

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Solution

The third proportional to 8,668 and 13,138 is: 19,913.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668 : 13,138 = 13,138 : x
  2. Step 2: Convert to fraction form
    8,668/13,138 = 13,138/x
  3. Step 3: Cross multiply
    8,668x = 13,138 × 13,138
  4. Step 4: Simplify right side
    8,668x = 172,607,044
  5. Step 5: Solve for x
    x = 172,607,044/8,668
  6. Step 6: Final answer
    x = 19,913.13

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.