Home / 13,815.56-20,723.38-3,427.31

Finding the Fourth Proportional to 13,815.56, 20,723.38 and 3,427.31

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Solution

The fourth proportional to 13,815.56, 20,723.38 and 3,427.31 is: 5,140.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.56 : 20,723.38 = 3,427.31 : x
  2. Step 2: Convert to fraction form
    13,815.56/20,723.38 = 3,427.31/x
  3. Step 3: Cross multiply
    13,815.56x = 20,723.38 × 3,427.31
  4. Step 4: Simplify right side
    13,815.56x = 71,025,490.75
  5. Step 5: Solve for x
    x = 71,025,490.75/13,815.56
  6. Step 6: Final answer
    x = 5,140.98

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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.