Home / 12,183.24-18,243.90-8,275.72

Finding the Fourth Proportional to 12,183.24, 18,243.90 and 8,275.72

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Solution

The fourth proportional to 12,183.24, 18,243.90 and 8,275.72 is: 12,392.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.24 : 18,243.90 = 8,275.72 : x
  2. Step 2: Convert to fraction form
    12,183.24/18,243.90 = 8,275.72/x
  3. Step 3: Cross multiply
    12,183.24x = 18,243.90 × 8,275.72
  4. Step 4: Simplify right side
    12,183.24x = 150,981,408.11
  5. Step 5: Solve for x
    x = 150,981,408.11/12,183.24
  6. Step 6: Final answer
    x = 12,392.55

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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.