Home / 12,091.20-18,107.64-8,183.76

Finding the Fourth Proportional to 12,091.20, 18,107.64 and 8,183.76

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Solution

The fourth proportional to 12,091.20, 18,107.64 and 8,183.76 is: 12,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,091.20 : 18,107.64 = 8,183.76 : x
  2. Step 2: Convert to fraction form
    12,091.20/18,107.64 = 8,183.76/x
  3. Step 3: Cross multiply
    12,091.20x = 18,107.64 × 8,183.76
  4. Step 4: Simplify right side
    12,091.20x = 148,188,579.93
  5. Step 5: Solve for x
    x = 148,188,579.93/12,091.20
  6. Step 6: Final answer
    x = 12,255.90

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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.