Home / 12,591.18-18,887.25-3,825.87

Finding the Fourth Proportional to 12,591.18, 18,887.25 and 3,825.87

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Solution

The fourth proportional to 12,591.18, 18,887.25 and 3,825.87 is: 5,738.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.18 : 18,887.25 = 3,825.87 : x
  2. Step 2: Convert to fraction form
    12,591.18/18,887.25 = 3,825.87/x
  3. Step 3: Cross multiply
    12,591.18x = 18,887.25 × 3,825.87
  4. Step 4: Simplify right side
    12,591.18x = 72,260,163.16
  5. Step 5: Solve for x
    x = 72,260,163.16/12,591.18
  6. Step 6: Final answer
    x = 5,738.95

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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.