Home / 31,717.60-43,770.18-18,288.80

Finding the Fourth Proportional to 31,717.60, 43,770.18 and 18,288.80

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Solution

The fourth proportional to 31,717.60, 43,770.18 and 18,288.80 is: 25,238.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,717.60 : 43,770.18 = 18,288.80 : x
  2. Step 2: Convert to fraction form
    31,717.60/43,770.18 = 18,288.80/x
  3. Step 3: Cross multiply
    31,717.60x = 43,770.18 × 18,288.80
  4. Step 4: Simplify right side
    31,717.60x = 800,504,067.98
  5. Step 5: Solve for x
    x = 800,504,067.98/31,717.60
  6. Step 6: Final answer
    x = 25,238.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.