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Finding the Fourth Proportional to 10,375.43, 15,550.83 and 5,442.39

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Solution

The fourth proportional to 10,375.43, 15,550.83 and 5,442.39 is: 8,157.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,375.43 : 15,550.83 = 5,442.39 : x
  2. Step 2: Convert to fraction form
    10,375.43/15,550.83 = 5,442.39/x
  3. Step 3: Cross multiply
    10,375.43x = 15,550.83 × 5,442.39
  4. Step 4: Simplify right side
    10,375.43x = 84,633,681.68
  5. Step 5: Solve for x
    x = 84,633,681.68/10,375.43
  6. Step 6: Final answer
    x = 8,157.13

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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.