Home / 13,631.82-20,462.04-12,081.75

Finding the Fourth Proportional to 13,631.82, 20,462.04 and 12,081.75

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Solution

The fourth proportional to 13,631.82, 20,462.04 and 12,081.75 is: 18,135.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.82 : 20,462.04 = 12,081.75 : x
  2. Step 2: Convert to fraction form
    13,631.82/20,462.04 = 12,081.75/x
  3. Step 3: Cross multiply
    13,631.82x = 20,462.04 × 12,081.75
  4. Step 4: Simplify right side
    13,631.82x = 247,217,251.77
  5. Step 5: Solve for x
    x = 247,217,251.77/13,631.82
  6. Step 6: Final answer
    x = 18,135.31

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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.