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Finding the Third Proportional to 11,415 and 15,269.25

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Solution

The third proportional to 11,415 and 15,269.25 is: 20,424.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415 : 15,269.25 = 15,269.25 : x
  2. Step 2: Convert to fraction form
    11,415/15,269.25 = 15,269.25/x
  3. Step 3: Cross multiply
    11,415x = 15,269.25 × 15,269.25
  4. Step 4: Simplify right side
    11,415x = 233,149,995.56
  5. Step 5: Solve for x
    x = 233,149,995.56/11,415
  6. Step 6: Final answer
    x = 20,424.88

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.