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Finding the Third Proportional to 9,865.13 and 15,091.31

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Solution

The third proportional to 9,865.13 and 15,091.31 is: 23,086.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.13 : 15,091.31 = 15,091.31 : x
  2. Step 2: Convert to fraction form
    9,865.13/15,091.31 = 15,091.31/x
  3. Step 3: Cross multiply
    9,865.13x = 15,091.31 × 15,091.31
  4. Step 4: Simplify right side
    9,865.13x = 227,747,712.97
  5. Step 5: Solve for x
    x = 227,747,712.97/9,865.13
  6. Step 6: Final answer
    x = 23,086.15

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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.