Home / 36,121.70-54,169.08-12,422.55

Finding the Fourth Proportional to 36,121.70, 54,169.08 and 12,422.55

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Solution

The fourth proportional to 36,121.70, 54,169.08 and 12,422.55 is: 18,629.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,121.70 : 54,169.08 = 12,422.55 : x
  2. Step 2: Convert to fraction form
    36,121.70/54,169.08 = 12,422.55/x
  3. Step 3: Cross multiply
    36,121.70x = 54,169.08 × 12,422.55
  4. Step 4: Simplify right side
    36,121.70x = 672,918,104.75
  5. Step 5: Solve for x
    x = 672,918,104.75/36,121.70
  6. Step 6: Final answer
    x = 18,629.19

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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.