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Finding the Third Proportional to 21,369 and 32,120

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Solution

The third proportional to 21,369 and 32,120 is: 48,279.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369 : 32,120 = 32,120 : x
  2. Step 2: Convert to fraction form
    21,369/32,120 = 32,120/x
  3. Step 3: Cross multiply
    21,369x = 32,120 × 32,120
  4. Step 4: Simplify right side
    21,369x = 1,031,694,400
  5. Step 5: Solve for x
    x = 1,031,694,400/21,369
  6. Step 6: Final answer
    x = 48,279.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.