Home / 38,659.20-57,983.40-12,366.60

Finding the Fourth Proportional to 38,659.20, 57,983.40 and 12,366.60

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Solution

The fourth proportional to 38,659.20, 57,983.40 and 12,366.60 is: 18,548.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,659.20 : 57,983.40 = 12,366.60 : x
  2. Step 2: Convert to fraction form
    38,659.20/57,983.40 = 12,366.60/x
  3. Step 3: Cross multiply
    38,659.20x = 57,983.40 × 12,366.60
  4. Step 4: Simplify right side
    38,659.20x = 717,057,514.44
  5. Step 5: Solve for x
    x = 717,057,514.44/38,659.20
  6. Step 6: Final answer
    x = 18,548.17

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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.