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Finding the Third Proportional to 11,432 and 15,440

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Solution

The third proportional to 11,432 and 15,440 is: 20,853.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,432 : 15,440 = 15,440 : x
  2. Step 2: Convert to fraction form
    11,432/15,440 = 15,440/x
  3. Step 3: Cross multiply
    11,432x = 15,440 × 15,440
  4. Step 4: Simplify right side
    11,432x = 238,393,600
  5. Step 5: Solve for x
    x = 238,393,600/11,432
  6. Step 6: Final answer
    x = 20,853.18

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.