Home / 12,190.83-18,286.29-3,425.82

Finding the Fourth Proportional to 12,190.83, 18,286.29 and 3,425.82

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Solution

The fourth proportional to 12,190.83, 18,286.29 and 3,425.82 is: 5,138.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.83 : 18,286.29 = 3,425.82 : x
  2. Step 2: Convert to fraction form
    12,190.83/18,286.29 = 3,425.82/x
  3. Step 3: Cross multiply
    12,190.83x = 18,286.29 × 3,425.82
  4. Step 4: Simplify right side
    12,190.83x = 62,645,538.01
  5. Step 5: Solve for x
    x = 62,645,538.01/12,190.83
  6. Step 6: Final answer
    x = 5,138.74

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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.