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Finding the Fourth Proportional to 19,251.46, 28,877.19 and 8,157.90

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Solution

The fourth proportional to 19,251.46, 28,877.19 and 8,157.90 is: 12,236.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.46 : 28,877.19 = 8,157.90 : x
  2. Step 2: Convert to fraction form
    19,251.46/28,877.19 = 8,157.90/x
  3. Step 3: Cross multiply
    19,251.46x = 28,877.19 × 8,157.90
  4. Step 4: Simplify right side
    19,251.46x = 235,577,228.30
  5. Step 5: Solve for x
    x = 235,577,228.30/19,251.46
  6. Step 6: Final answer
    x = 12,236.85

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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.