Home / 13,855.23-20,780.24-3,723.75

Finding the Fourth Proportional to 13,855.23, 20,780.24 and 3,723.75

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Solution

The fourth proportional to 13,855.23, 20,780.24 and 3,723.75 is: 5,584.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.23 : 20,780.24 = 3,723.75 : x
  2. Step 2: Convert to fraction form
    13,855.23/20,780.24 = 3,723.75/x
  3. Step 3: Cross multiply
    13,855.23x = 20,780.24 × 3,723.75
  4. Step 4: Simplify right side
    13,855.23x = 77,380,400.08
  5. Step 5: Solve for x
    x = 77,380,400.08/13,855.23
  6. Step 6: Final answer
    x = 5,584.92

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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.