Home / 12,190.22-18,274.38-4,397.21

Finding the Fourth Proportional to 12,190.22, 18,274.38 and 4,397.21

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Solution

The fourth proportional to 12,190.22, 18,274.38 and 4,397.21 is: 6,591.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.22 : 18,274.38 = 4,397.21 : x
  2. Step 2: Convert to fraction form
    12,190.22/18,274.38 = 4,397.21/x
  3. Step 3: Cross multiply
    12,190.22x = 18,274.38 × 4,397.21
  4. Step 4: Simplify right side
    12,190.22x = 80,356,286.48
  5. Step 5: Solve for x
    x = 80,356,286.48/12,190.22
  6. Step 6: Final answer
    x = 6,591.87

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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.