Home / 12,190.23-18,286.05-3,425.83

Finding the Fourth Proportional to 12,190.23, 18,286.05 and 3,425.83

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Solution

The fourth proportional to 12,190.23, 18,286.05 and 3,425.83 is: 5,138.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.23 : 18,286.05 = 3,425.83 : x
  2. Step 2: Convert to fraction form
    12,190.23/18,286.05 = 3,425.83/x
  3. Step 3: Cross multiply
    12,190.23x = 18,286.05 × 3,425.83
  4. Step 4: Simplify right side
    12,190.23x = 62,644,865.80
  5. Step 5: Solve for x
    x = 62,644,865.80/12,190.23
  6. Step 6: Final answer
    x = 5,138.94

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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.