Home / 18,909.25-28,357.27-5,578.71

Finding the Fourth Proportional to 18,909.25, 28,357.27 and 5,578.71

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Solution

The fourth proportional to 18,909.25, 28,357.27 and 5,578.71 is: 8,366.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909.25 : 28,357.27 = 5,578.71 : x
  2. Step 2: Convert to fraction form
    18,909.25/28,357.27 = 5,578.71/x
  3. Step 3: Cross multiply
    18,909.25x = 28,357.27 × 5,578.71
  4. Step 4: Simplify right side
    18,909.25x = 158,196,936.33
  5. Step 5: Solve for x
    x = 158,196,936.33/18,909.25
  6. Step 6: Final answer
    x = 8,366.11

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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.