Home / 38,480.20-57,714.90-12,187.60

Finding the Fourth Proportional to 38,480.20, 57,714.90 and 12,187.60

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Solution

The fourth proportional to 38,480.20, 57,714.90 and 12,187.60 is: 18,279.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,480.20 : 57,714.90 = 12,187.60 : x
  2. Step 2: Convert to fraction form
    38,480.20/57,714.90 = 12,187.60/x
  3. Step 3: Cross multiply
    38,480.20x = 57,714.90 × 12,187.60
  4. Step 4: Simplify right side
    38,480.20x = 703,406,115.24
  5. Step 5: Solve for x
    x = 703,406,115.24/38,480.20
  6. Step 6: Final answer
    x = 18,279.69

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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.