Home / 12,190.20-18,286.44-3,425.07

Finding the Fourth Proportional to 12,190.20, 18,286.44 and 3,425.07

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Solution

The fourth proportional to 12,190.20, 18,286.44 and 3,425.07 is: 5,137.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.20 : 18,286.44 = 3,425.07 : x
  2. Step 2: Convert to fraction form
    12,190.20/18,286.44 = 3,425.07/x
  3. Step 3: Cross multiply
    12,190.20x = 18,286.44 × 3,425.07
  4. Step 4: Simplify right side
    12,190.20x = 62,632,337.05
  5. Step 5: Solve for x
    x = 62,632,337.05/12,190.20
  6. Step 6: Final answer
    x = 5,137.93

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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.