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Finding the Fourth Proportional to 10,957.80, 16,425.90 and 4,375.20

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Solution

The fourth proportional to 10,957.80, 16,425.90 and 4,375.20 is: 6,558.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,957.80 : 16,425.90 = 4,375.20 : x
  2. Step 2: Convert to fraction form
    10,957.80/16,425.90 = 4,375.20/x
  3. Step 3: Cross multiply
    10,957.80x = 16,425.90 × 4,375.20
  4. Step 4: Simplify right side
    10,957.80x = 71,866,597.68
  5. Step 5: Solve for x
    x = 71,866,597.68/10,957.80
  6. Step 6: Final answer
    x = 6,558.49

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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.