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Finding the Fourth Proportional to 13,692.88, 20,539.38 and 3,304.63

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Solution

The fourth proportional to 13,692.88, 20,539.38 and 3,304.63 is: 4,956.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.88 : 20,539.38 = 3,304.63 : x
  2. Step 2: Convert to fraction form
    13,692.88/20,539.38 = 3,304.63/x
  3. Step 3: Cross multiply
    13,692.88x = 20,539.38 × 3,304.63
  4. Step 4: Simplify right side
    13,692.88x = 67,874,948.63
  5. Step 5: Solve for x
    x = 67,874,948.63/13,692.88
  6. Step 6: Final answer
    x = 4,956.95

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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.