Home / 20,839.23-31,276.52-8,367.69

Finding the Fourth Proportional to 20,839.23, 31,276.52 and 8,367.69

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Solution

The fourth proportional to 20,839.23, 31,276.52 and 8,367.69 is: 12,558.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.23 : 31,276.52 = 8,367.69 : x
  2. Step 2: Convert to fraction form
    20,839.23/31,276.52 = 8,367.69/x
  3. Step 3: Cross multiply
    20,839.23x = 31,276.52 × 8,367.69
  4. Step 4: Simplify right side
    20,839.23x = 261,712,067.26
  5. Step 5: Solve for x
    x = 261,712,067.26/20,839.23
  6. Step 6: Final answer
    x = 12,558.63

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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.