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Finding the Third Proportional to 15,349.50 and 18,171

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Solution

The third proportional to 15,349.50 and 18,171 is: 21,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.50 : 18,171 = 18,171 : x
  2. Step 2: Convert to fraction form
    15,349.50/18,171 = 18,171/x
  3. Step 3: Cross multiply
    15,349.50x = 18,171 × 18,171
  4. Step 4: Simplify right side
    15,349.50x = 330,185,241
  5. Step 5: Solve for x
    x = 330,185,241/15,349.50
  6. Step 6: Final answer
    x = 21,511.14

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.