Home / 38,479.28-57,729.12-12,184.48

Finding the Fourth Proportional to 38,479.28, 57,729.12 and 12,184.48

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Solution

The fourth proportional to 38,479.28, 57,729.12 and 12,184.48 is: 18,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,479.28 : 57,729.12 = 12,184.48 : x
  2. Step 2: Convert to fraction form
    38,479.28/57,729.12 = 12,184.48/x
  3. Step 3: Cross multiply
    38,479.28x = 57,729.12 × 12,184.48
  4. Step 4: Simplify right side
    38,479.28x = 703,399,308.06
  5. Step 5: Solve for x
    x = 703,399,308.06/38,479.28
  6. Step 6: Final answer
    x = 18,279.95

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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.