Home / 13,815.62-20,723.64-3,427.38

Finding the Fourth Proportional to 13,815.62, 20,723.64 and 3,427.38

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Solution

The fourth proportional to 13,815.62, 20,723.64 and 3,427.38 is: 5,141.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.62 : 20,723.64 = 3,427.38 : x
  2. Step 2: Convert to fraction form
    13,815.62/20,723.64 = 3,427.38/x
  3. Step 3: Cross multiply
    13,815.62x = 20,723.64 × 3,427.38
  4. Step 4: Simplify right side
    13,815.62x = 71,027,789.26
  5. Step 5: Solve for x
    x = 71,027,789.26/13,815.62
  6. Step 6: Final answer
    x = 5,141.12

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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.