Home / 12,189.14-18,281-3,423.86

Finding the Fourth Proportional to 12,189.14, 18,281 and 3,423.86

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Solution

The fourth proportional to 12,189.14, 18,281 and 3,423.86 is: 5,135.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.14 : 18,281 = 3,423.86 : x
  2. Step 2: Convert to fraction form
    12,189.14/18,281 = 3,423.86/x
  3. Step 3: Cross multiply
    12,189.14x = 18,281 × 3,423.86
  4. Step 4: Simplify right side
    12,189.14x = 62,591,584.66
  5. Step 5: Solve for x
    x = 62,591,584.66/12,189.14
  6. Step 6: Final answer
    x = 5,135.03

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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.