Home / 19,158.30-28,737.45-12,591.90

Finding the Fourth Proportional to 19,158.30, 28,737.45 and 12,591.90

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Solution

The fourth proportional to 19,158.30, 28,737.45 and 12,591.90 is: 18,887.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.30 : 28,737.45 = 12,591.90 : x
  2. Step 2: Convert to fraction form
    19,158.30/28,737.45 = 12,591.90/x
  3. Step 3: Cross multiply
    19,158.30x = 28,737.45 × 12,591.90
  4. Step 4: Simplify right side
    19,158.30x = 361,859,096.66
  5. Step 5: Solve for x
    x = 361,859,096.66/19,158.30
  6. Step 6: Final answer
    x = 18,887.85

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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.