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Finding the Fourth Proportional to 13,794.40, 20,692.40 and 3,934.40

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Solution

The fourth proportional to 13,794.40, 20,692.40 and 3,934.40 is: 5,901.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,794.40 : 20,692.40 = 3,934.40 : x
  2. Step 2: Convert to fraction form
    13,794.40/20,692.40 = 3,934.40/x
  3. Step 3: Cross multiply
    13,794.40x = 20,692.40 × 3,934.40
  4. Step 4: Simplify right side
    13,794.40x = 81,412,178.56
  5. Step 5: Solve for x
    x = 81,412,178.56/13,794.40
  6. Step 6: Final answer
    x = 5,901.83

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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.