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Finding the Third Proportional to 17,458 and 20,171

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Solution

The third proportional to 17,458 and 20,171 is: 23,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,458 : 20,171 = 20,171 : x
  2. Step 2: Convert to fraction form
    17,458/20,171 = 20,171/x
  3. Step 3: Cross multiply
    17,458x = 20,171 × 20,171
  4. Step 4: Simplify right side
    17,458x = 406,869,241
  5. Step 5: Solve for x
    x = 406,869,241/17,458
  6. Step 6: Final answer
    x = 23,305.60

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.