Home / 38,138.20-57,207.30-11,845.60

Finding the Fourth Proportional to 38,138.20, 57,207.30 and 11,845.60

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Solution

The fourth proportional to 38,138.20, 57,207.30 and 11,845.60 is: 17,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138.20 : 57,207.30 = 11,845.60 : x
  2. Step 2: Convert to fraction form
    38,138.20/57,207.30 = 11,845.60/x
  3. Step 3: Cross multiply
    38,138.20x = 57,207.30 × 11,845.60
  4. Step 4: Simplify right side
    38,138.20x = 677,654,792.88
  5. Step 5: Solve for x
    x = 677,654,792.88/38,138.20
  6. Step 6: Final answer
    x = 17,768.40

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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.