Home / 13,379.92-20,082.34-6,811.02

Finding the Fourth Proportional to 13,379.92, 20,082.34 and 6,811.02

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Solution

The fourth proportional to 13,379.92, 20,082.34 and 6,811.02 is: 10,222.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.92 : 20,082.34 = 6,811.02 : x
  2. Step 2: Convert to fraction form
    13,379.92/20,082.34 = 6,811.02/x
  3. Step 3: Cross multiply
    13,379.92x = 20,082.34 × 6,811.02
  4. Step 4: Simplify right side
    13,379.92x = 136,781,277.67
  5. Step 5: Solve for x
    x = 136,781,277.67/13,379.92
  6. Step 6: Final answer
    x = 10,222.88

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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.