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Finding the Third Proportional to 15,366 and 21,762

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Solution

The third proportional to 15,366 and 21,762 is: 30,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,366 : 21,762 = 21,762 : x
  2. Step 2: Convert to fraction form
    15,366/21,762 = 21,762/x
  3. Step 3: Cross multiply
    15,366x = 21,762 × 21,762
  4. Step 4: Simplify right side
    15,366x = 473,584,644
  5. Step 5: Solve for x
    x = 473,584,644/15,366
  6. Step 6: Final answer
    x = 30,820.29

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.