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Finding the Third Proportional to 12,728 and 15,032

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Solution

The third proportional to 12,728 and 15,032 is: 17,753.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728 : 15,032 = 15,032 : x
  2. Step 2: Convert to fraction form
    12,728/15,032 = 15,032/x
  3. Step 3: Cross multiply
    12,728x = 15,032 × 15,032
  4. Step 4: Simplify right side
    12,728x = 225,961,024
  5. Step 5: Solve for x
    x = 225,961,024/12,728
  6. Step 6: Final answer
    x = 17,753.07

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.