Home / 12,147.92-18,221.90-3,382.83

Finding the Fourth Proportional to 12,147.92, 18,221.90 and 3,382.83

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Solution

The fourth proportional to 12,147.92, 18,221.90 and 3,382.83 is: 5,074.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.92 : 18,221.90 = 3,382.83 : x
  2. Step 2: Convert to fraction form
    12,147.92/18,221.90 = 3,382.83/x
  3. Step 3: Cross multiply
    12,147.92x = 18,221.90 × 3,382.83
  4. Step 4: Simplify right side
    12,147.92x = 61,641,589.98
  5. Step 5: Solve for x
    x = 61,641,589.98/12,147.92
  6. Step 6: Final answer
    x = 5,074.25

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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.