Home / 12,286.15-18,429.21-8,152.56

Finding the Fourth Proportional to 12,286.15, 18,429.21 and 8,152.56

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Solution

The fourth proportional to 12,286.15, 18,429.21 and 8,152.56 is: 12,228.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.15 : 18,429.21 = 8,152.56 : x
  2. Step 2: Convert to fraction form
    12,286.15/18,429.21 = 8,152.56/x
  3. Step 3: Cross multiply
    12,286.15x = 18,429.21 × 8,152.56
  4. Step 4: Simplify right side
    12,286.15x = 150,245,240.28
  5. Step 5: Solve for x
    x = 150,245,240.28/12,286.15
  6. Step 6: Final answer
    x = 12,228.83

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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.