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Finding the Fourth Proportional to 17,791.28, 26,687.37 and 8,429.10

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Solution

The fourth proportional to 17,791.28, 26,687.37 and 8,429.10 is: 12,643.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,791.28 : 26,687.37 = 8,429.10 : x
  2. Step 2: Convert to fraction form
    17,791.28/26,687.37 = 8,429.10/x
  3. Step 3: Cross multiply
    17,791.28x = 26,687.37 × 8,429.10
  4. Step 4: Simplify right side
    17,791.28x = 224,950,510.47
  5. Step 5: Solve for x
    x = 224,950,510.47/17,791.28
  6. Step 6: Final answer
    x = 12,643.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.