Home / 18,565.55-27,854.70-5,419.85

Finding the Fourth Proportional to 18,565.55, 27,854.70 and 5,419.85

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Solution

The fourth proportional to 18,565.55, 27,854.70 and 5,419.85 is: 8,131.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.55 : 27,854.70 = 5,419.85 : x
  2. Step 2: Convert to fraction form
    18,565.55/27,854.70 = 5,419.85/x
  3. Step 3: Cross multiply
    18,565.55x = 27,854.70 × 5,419.85
  4. Step 4: Simplify right side
    18,565.55x = 150,968,295.80
  5. Step 5: Solve for x
    x = 150,968,295.80/18,565.55
  6. Step 6: Final answer
    x = 8,131.64

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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.