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Finding the Fourth Proportional to 12,310.11, 17,002.11 and 8,967.87

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Solution

The fourth proportional to 12,310.11, 17,002.11 and 8,967.87 is: 12,385.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.11 : 17,002.11 = 8,967.87 : x
  2. Step 2: Convert to fraction form
    12,310.11/17,002.11 = 8,967.87/x
  3. Step 3: Cross multiply
    12,310.11x = 17,002.11 × 8,967.87
  4. Step 4: Simplify right side
    12,310.11x = 152,472,712.21
  5. Step 5: Solve for x
    x = 152,472,712.21/12,310.11
  6. Step 6: Final answer
    x = 12,385.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.