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Finding the Third Proportional to 11,138 and 19,802

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Solution

The third proportional to 11,138 and 19,802 is: 35,205.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138 : 19,802 = 19,802 : x
  2. Step 2: Convert to fraction form
    11,138/19,802 = 19,802/x
  3. Step 3: Cross multiply
    11,138x = 19,802 × 19,802
  4. Step 4: Simplify right side
    11,138x = 392,119,204
  5. Step 5: Solve for x
    x = 392,119,204/11,138
  6. Step 6: Final answer
    x = 35,205.53

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.