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Finding the Fourth Proportional to 28,559.76, 42,845.92 and 8,568.44

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Solution

The fourth proportional to 28,559.76, 42,845.92 and 8,568.44 is: 12,854.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.76 : 42,845.92 = 8,568.44 : x
  2. Step 2: Convert to fraction form
    28,559.76/42,845.92 = 8,568.44/x
  3. Step 3: Cross multiply
    28,559.76x = 42,845.92 × 8,568.44
  4. Step 4: Simplify right side
    28,559.76x = 367,122,694.76
  5. Step 5: Solve for x
    x = 367,122,694.76/28,559.76
  6. Step 6: Final answer
    x = 12,854.54

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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.