Home / 12,190.58-18,286.96-3,425.43

Finding the Fourth Proportional to 12,190.58, 18,286.96 and 3,425.43

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Solution

The fourth proportional to 12,190.58, 18,286.96 and 3,425.43 is: 5,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.58 : 18,286.96 = 3,425.43 : x
  2. Step 2: Convert to fraction form
    12,190.58/18,286.96 = 3,425.43/x
  3. Step 3: Cross multiply
    12,190.58x = 18,286.96 × 3,425.43
  4. Step 4: Simplify right side
    12,190.58x = 62,640,701.39
  5. Step 5: Solve for x
    x = 62,640,701.39/12,190.58
  6. Step 6: Final answer
    x = 5,138.45

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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.