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Finding the Fourth Proportional to 13,692.56, 18,850.02 and 13,065.62

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Solution

The fourth proportional to 13,692.56, 18,850.02 and 13,065.62 is: 17,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.56 : 18,850.02 = 13,065.62 : x
  2. Step 2: Convert to fraction form
    13,692.56/18,850.02 = 13,065.62/x
  3. Step 3: Cross multiply
    13,692.56x = 18,850.02 × 13,065.62
  4. Step 4: Simplify right side
    13,692.56x = 246,287,198.31
  5. Step 5: Solve for x
    x = 246,287,198.31/13,692.56
  6. Step 6: Final answer
    x = 17,986.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.