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Finding the Third Proportional to 15,640 and 22,872

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Solution

The third proportional to 15,640 and 22,872 is: 33,448.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640 : 22,872 = 22,872 : x
  2. Step 2: Convert to fraction form
    15,640/22,872 = 22,872/x
  3. Step 3: Cross multiply
    15,640x = 22,872 × 22,872
  4. Step 4: Simplify right side
    15,640x = 523,128,384
  5. Step 5: Solve for x
    x = 523,128,384/15,640
  6. Step 6: Final answer
    x = 33,448.11

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.