Home / 12,228.88-18,343.11-3,908.85

Finding the Fourth Proportional to 12,228.88, 18,343.11 and 3,908.85

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Solution

The fourth proportional to 12,228.88, 18,343.11 and 3,908.85 is: 5,863.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.88 : 18,343.11 = 3,908.85 : x
  2. Step 2: Convert to fraction form
    12,228.88/18,343.11 = 3,908.85/x
  3. Step 3: Cross multiply
    12,228.88x = 18,343.11 × 3,908.85
  4. Step 4: Simplify right side
    12,228.88x = 71,700,465.52
  5. Step 5: Solve for x
    x = 71,700,465.52/12,228.88
  6. Step 6: Final answer
    x = 5,863.21

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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.