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Finding the Third Proportional to 8,156 and 15,400

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Solution

The third proportional to 8,156 and 15,400 is: 29,077.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156 : 15,400 = 15,400 : x
  2. Step 2: Convert to fraction form
    8,156/15,400 = 15,400/x
  3. Step 3: Cross multiply
    8,156x = 15,400 × 15,400
  4. Step 4: Simplify right side
    8,156x = 237,160,000
  5. Step 5: Solve for x
    x = 237,160,000/8,156
  6. Step 6: Final answer
    x = 29,077.98

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.