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Finding the Third Proportional to 11,962 and 18,911

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Solution

The third proportional to 11,962 and 18,911 is: 29,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,962 : 18,911 = 18,911 : x
  2. Step 2: Convert to fraction form
    11,962/18,911 = 18,911/x
  3. Step 3: Cross multiply
    11,962x = 18,911 × 18,911
  4. Step 4: Simplify right side
    11,962x = 357,625,921
  5. Step 5: Solve for x
    x = 357,625,921/11,962
  6. Step 6: Final answer
    x = 29,896.83

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.