Home / 18,977.39-28,476.26-7,891.73

Finding the Fourth Proportional to 18,977.39, 28,476.26 and 7,891.73

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Solution

The fourth proportional to 18,977.39, 28,476.26 and 7,891.73 is: 11,841.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.39 : 28,476.26 = 7,891.73 : x
  2. Step 2: Convert to fraction form
    18,977.39/28,476.26 = 7,891.73/x
  3. Step 3: Cross multiply
    18,977.39x = 28,476.26 × 7,891.73
  4. Step 4: Simplify right side
    18,977.39x = 224,726,909.87
  5. Step 5: Solve for x
    x = 224,726,909.87/18,977.39
  6. Step 6: Final answer
    x = 11,841.82

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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.