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Finding the Fourth Proportional to 28,452.88, 42,674.16 and 7,671.52

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Solution

The fourth proportional to 28,452.88, 42,674.16 and 7,671.52 is: 11,505.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,452.88 : 42,674.16 = 7,671.52 : x
  2. Step 2: Convert to fraction form
    28,452.88/42,674.16 = 7,671.52/x
  3. Step 3: Cross multiply
    28,452.88x = 42,674.16 × 7,671.52
  4. Step 4: Simplify right side
    28,452.88x = 327,375,671.92
  5. Step 5: Solve for x
    x = 327,375,671.92/28,452.88
  6. Step 6: Final answer
    x = 11,505.89

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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.