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Finding the Third Proportional to 20,132 and 38,440

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Solution

The third proportional to 20,132 and 38,440 is: 73,397.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132 : 38,440 = 38,440 : x
  2. Step 2: Convert to fraction form
    20,132/38,440 = 38,440/x
  3. Step 3: Cross multiply
    20,132x = 38,440 × 38,440
  4. Step 4: Simplify right side
    20,132x = 1,477,633,600
  5. Step 5: Solve for x
    x = 1,477,633,600/20,132
  6. Step 6: Final answer
    x = 73,397.26

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.