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Finding the Fourth Proportional to 28,442.62, 42,660.18 and 8,451.68

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Solution

The fourth proportional to 28,442.62, 42,660.18 and 8,451.68 is: 12,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.62 : 42,660.18 = 8,451.68 : x
  2. Step 2: Convert to fraction form
    28,442.62/42,660.18 = 8,451.68/x
  3. Step 3: Cross multiply
    28,442.62x = 42,660.18 × 8,451.68
  4. Step 4: Simplify right side
    28,442.62x = 360,550,296.75
  5. Step 5: Solve for x
    x = 360,550,296.75/28,442.62
  6. Step 6: Final answer
    x = 12,676.41

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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.