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Finding the Fourth Proportional to 10,951.80, 16,422.90 and 4,375.80

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Solution

The fourth proportional to 10,951.80, 16,422.90 and 4,375.80 is: 6,561.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,951.80 : 16,422.90 = 4,375.80 : x
  2. Step 2: Convert to fraction form
    10,951.80/16,422.90 = 4,375.80/x
  3. Step 3: Cross multiply
    10,951.80x = 16,422.90 × 4,375.80
  4. Step 4: Simplify right side
    10,951.80x = 71,863,325.82
  5. Step 5: Solve for x
    x = 71,863,325.82/10,951.80
  6. Step 6: Final answer
    x = 6,561.78

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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.