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Finding the Third Proportional to 11,689 and 18,829

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Solution

The third proportional to 11,689 and 18,829 is: 30,330.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689 : 18,829 = 18,829 : x
  2. Step 2: Convert to fraction form
    11,689/18,829 = 18,829/x
  3. Step 3: Cross multiply
    11,689x = 18,829 × 18,829
  4. Step 4: Simplify right side
    11,689x = 354,531,241
  5. Step 5: Solve for x
    x = 354,531,241/11,689
  6. Step 6: Final answer
    x = 30,330.33

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.