Home / 12,591.43-18,887.15-4,272.29

Finding the Fourth Proportional to 12,591.43, 18,887.15 and 4,272.29

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Solution

The fourth proportional to 12,591.43, 18,887.15 and 4,272.29 is: 6,408.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.43 : 18,887.15 = 4,272.29 : x
  2. Step 2: Convert to fraction form
    12,591.43/18,887.15 = 4,272.29/x
  3. Step 3: Cross multiply
    12,591.43x = 18,887.15 × 4,272.29
  4. Step 4: Simplify right side
    12,591.43x = 80,691,382.07
  5. Step 5: Solve for x
    x = 80,691,382.07/12,591.43
  6. Step 6: Final answer
    x = 6,408.44

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Similar ratio
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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.