Home / 38,455.40-57,672.30-12,168.20

Finding the Fourth Proportional to 38,455.40, 57,672.30 and 12,168.20

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Solution

The fourth proportional to 38,455.40, 57,672.30 and 12,168.20 is: 18,248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,455.40 : 57,672.30 = 12,168.20 : x
  2. Step 2: Convert to fraction form
    38,455.40/57,672.30 = 12,168.20/x
  3. Step 3: Cross multiply
    38,455.40x = 57,672.30 × 12,168.20
  4. Step 4: Simplify right side
    38,455.40x = 701,768,080.86
  5. Step 5: Solve for x
    x = 701,768,080.86/38,455.40
  6. Step 6: Final answer
    x = 18,248.88

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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.