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Finding the Third Proportional to 8,900 and 18,812

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Solution

The third proportional to 8,900 and 18,812 is: 39,763.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900 : 18,812 = 18,812 : x
  2. Step 2: Convert to fraction form
    8,900/18,812 = 18,812/x
  3. Step 3: Cross multiply
    8,900x = 18,812 × 18,812
  4. Step 4: Simplify right side
    8,900x = 353,891,344
  5. Step 5: Solve for x
    x = 353,891,344/8,900
  6. Step 6: Final answer
    x = 39,763.07

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.