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Finding the Third Proportional to 7,142 and 15,512

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Solution

The third proportional to 7,142 and 15,512 is: 33,691.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142 : 15,512 = 15,512 : x
  2. Step 2: Convert to fraction form
    7,142/15,512 = 15,512/x
  3. Step 3: Cross multiply
    7,142x = 15,512 × 15,512
  4. Step 4: Simplify right side
    7,142x = 240,622,144
  5. Step 5: Solve for x
    x = 240,622,144/7,142
  6. Step 6: Final answer
    x = 33,691.14

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.