Home / 18,707.10-28,067.94-8,311.56

Finding the Fourth Proportional to 18,707.10, 28,067.94 and 8,311.56

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Solution

The fourth proportional to 18,707.10, 28,067.94 and 8,311.56 is: 12,470.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.10 : 28,067.94 = 8,311.56 : x
  2. Step 2: Convert to fraction form
    18,707.10/28,067.94 = 8,311.56/x
  3. Step 3: Cross multiply
    18,707.10x = 28,067.94 × 8,311.56
  4. Step 4: Simplify right side
    18,707.10x = 233,288,367.39
  5. Step 5: Solve for x
    x = 233,288,367.39/18,707.10
  6. Step 6: Final answer
    x = 12,470.58

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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.