Home / 12,591.50-18,887.65-3,826.49

Finding the Fourth Proportional to 12,591.50, 18,887.65 and 3,826.49

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Solution

The fourth proportional to 12,591.50, 18,887.65 and 3,826.49 is: 5,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.50 : 18,887.65 = 3,826.49 : x
  2. Step 2: Convert to fraction form
    12,591.50/18,887.65 = 3,826.49/x
  3. Step 3: Cross multiply
    12,591.50x = 18,887.65 × 3,826.49
  4. Step 4: Simplify right side
    12,591.50x = 72,273,403.85
  5. Step 5: Solve for x
    x = 72,273,403.85/12,591.50
  6. Step 6: Final answer
    x = 5,739.86

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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.