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Finding the Fourth Proportional to 28,089.42, 42,134.12 and 8,367.47

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Solution

The fourth proportional to 28,089.42, 42,134.12 and 8,367.47 is: 12,551.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.42 : 42,134.12 = 8,367.47 : x
  2. Step 2: Convert to fraction form
    28,089.42/42,134.12 = 8,367.47/x
  3. Step 3: Cross multiply
    28,089.42x = 42,134.12 × 8,367.47
  4. Step 4: Simplify right side
    28,089.42x = 352,555,732.57
  5. Step 5: Solve for x
    x = 352,555,732.57/28,089.42
  6. Step 6: Final answer
    x = 12,551.19

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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.