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Finding the Third Proportional to 9,979 and 15,272

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Solution

The third proportional to 9,979 and 15,272 is: 23,372.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979 : 15,272 = 15,272 : x
  2. Step 2: Convert to fraction form
    9,979/15,272 = 15,272/x
  3. Step 3: Cross multiply
    9,979x = 15,272 × 15,272
  4. Step 4: Simplify right side
    9,979x = 233,233,984
  5. Step 5: Solve for x
    x = 233,233,984/9,979
  6. Step 6: Final answer
    x = 23,372.48

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.