Home / 31,919.60-47,879.42-15,275.72

Finding the Fourth Proportional to 31,919.60, 47,879.42 and 15,275.72

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Solution

The fourth proportional to 31,919.60, 47,879.42 and 15,275.72 is: 22,913.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,919.60 : 47,879.42 = 15,275.72 : x
  2. Step 2: Convert to fraction form
    31,919.60/47,879.42 = 15,275.72/x
  3. Step 3: Cross multiply
    31,919.60x = 47,879.42 × 15,275.72
  4. Step 4: Simplify right side
    31,919.60x = 731,392,613.68
  5. Step 5: Solve for x
    x = 731,392,613.68/31,919.60
  6. Step 6: Final answer
    x = 22,913.59

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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.