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Finding the Fourth Proportional to 28,375.60, 42,551.04 and 9,650.56

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Solution

The fourth proportional to 28,375.60, 42,551.04 and 9,650.56 is: 14,471.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.60 : 42,551.04 = 9,650.56 : x
  2. Step 2: Convert to fraction form
    28,375.60/42,551.04 = 9,650.56/x
  3. Step 3: Cross multiply
    28,375.60x = 42,551.04 × 9,650.56
  4. Step 4: Simplify right side
    28,375.60x = 410,641,364.58
  5. Step 5: Solve for x
    x = 410,641,364.58/28,375.60
  6. Step 6: Final answer
    x = 14,471.64

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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.