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Finding the Third Proportional to 16,212 and 18,624

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Solution

The third proportional to 16,212 and 18,624 is: 21,394.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,212 : 18,624 = 18,624 : x
  2. Step 2: Convert to fraction form
    16,212/18,624 = 18,624/x
  3. Step 3: Cross multiply
    16,212x = 18,624 × 18,624
  4. Step 4: Simplify right side
    16,212x = 346,853,376
  5. Step 5: Solve for x
    x = 346,853,376/16,212
  6. Step 6: Final answer
    x = 21,394.85

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.