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Finding the Third Proportional to 8,838 and 12,489

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Solution

The third proportional to 8,838 and 12,489 is: 17,648.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,838 : 12,489 = 12,489 : x
  2. Step 2: Convert to fraction form
    8,838/12,489 = 12,489/x
  3. Step 3: Cross multiply
    8,838x = 12,489 × 12,489
  4. Step 4: Simplify right side
    8,838x = 155,975,121
  5. Step 5: Solve for x
    x = 155,975,121/8,838
  6. Step 6: Final answer
    x = 17,648.24

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.