Home / 20,165.22-30,251.07-12,382.74

Finding the Fourth Proportional to 20,165.22, 30,251.07 and 12,382.74

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Solution

The fourth proportional to 20,165.22, 30,251.07 and 12,382.74 is: 18,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.22 : 30,251.07 = 12,382.74 : x
  2. Step 2: Convert to fraction form
    20,165.22/30,251.07 = 12,382.74/x
  3. Step 3: Cross multiply
    20,165.22x = 30,251.07 × 12,382.74
  4. Step 4: Simplify right side
    20,165.22x = 374,591,134.53
  5. Step 5: Solve for x
    x = 374,591,134.53/20,165.22
  6. Step 6: Final answer
    x = 18,576.10

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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.