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Finding the Third Proportional to 13,722 and 15,504

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Solution

The third proportional to 13,722 and 15,504 is: 17,517.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722 : 15,504 = 15,504 : x
  2. Step 2: Convert to fraction form
    13,722/15,504 = 15,504/x
  3. Step 3: Cross multiply
    13,722x = 15,504 × 15,504
  4. Step 4: Simplify right side
    13,722x = 240,374,016
  5. Step 5: Solve for x
    x = 240,374,016/13,722
  6. Step 6: Final answer
    x = 17,517.42

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.