Home / 13,631.29-20,446.92-4,271.38

Finding the Fourth Proportional to 13,631.29, 20,446.92 and 4,271.38

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Solution

The fourth proportional to 13,631.29, 20,446.92 and 4,271.38 is: 6,407.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.29 : 20,446.92 = 4,271.38 : x
  2. Step 2: Convert to fraction form
    13,631.29/20,446.92 = 4,271.38/x
  3. Step 3: Cross multiply
    13,631.29x = 20,446.92 × 4,271.38
  4. Step 4: Simplify right side
    13,631.29x = 87,336,565.15
  5. Step 5: Solve for x
    x = 87,336,565.15/13,631.29
  6. Step 6: Final answer
    x = 6,407.07

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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.