Home / 12,087.20-18,129.24-3,322.79

Finding the Fourth Proportional to 12,087.20, 18,129.24 and 3,322.79

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Solution

The fourth proportional to 12,087.20, 18,129.24 and 3,322.79 is: 4,983.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.20 : 18,129.24 = 3,322.79 : x
  2. Step 2: Convert to fraction form
    12,087.20/18,129.24 = 3,322.79/x
  3. Step 3: Cross multiply
    12,087.20x = 18,129.24 × 3,322.79
  4. Step 4: Simplify right side
    12,087.20x = 60,239,702.70
  5. Step 5: Solve for x
    x = 60,239,702.70/12,087.20
  6. Step 6: Final answer
    x = 4,983.76

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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.