Home / 12,099.45-18,149.31-3,778.86

Finding the Fourth Proportional to 12,099.45, 18,149.31 and 3,778.86

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Solution

The fourth proportional to 12,099.45, 18,149.31 and 3,778.86 is: 5,668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,099.45 : 18,149.31 = 3,778.86 : x
  2. Step 2: Convert to fraction form
    12,099.45/18,149.31 = 3,778.86/x
  3. Step 3: Cross multiply
    12,099.45x = 18,149.31 × 3,778.86
  4. Step 4: Simplify right side
    12,099.45x = 68,583,701.59
  5. Step 5: Solve for x
    x = 68,583,701.59/12,099.45
  6. Step 6: Final answer
    x = 5,668.33

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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.