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Finding the Fourth Proportional to 13,773.42, 20,660.91 and 3,911.91

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Solution

The fourth proportional to 13,773.42, 20,660.91 and 3,911.91 is: 5,868.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,773.42 : 20,660.91 = 3,911.91 : x
  2. Step 2: Convert to fraction form
    13,773.42/20,660.91 = 3,911.91/x
  3. Step 3: Cross multiply
    13,773.42x = 20,660.91 × 3,911.91
  4. Step 4: Simplify right side
    13,773.42x = 80,823,620.44
  5. Step 5: Solve for x
    x = 80,823,620.44/13,773.42
  6. Step 6: Final answer
    x = 5,868.09

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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.