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Finding the Fourth Proportional to 18,650.88, 25,738.20 and 10,692.72

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Solution

The fourth proportional to 18,650.88, 25,738.20 and 10,692.72 is: 14,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,650.88 : 25,738.20 = 10,692.72 : x
  2. Step 2: Convert to fraction form
    18,650.88/25,738.20 = 10,692.72/x
  3. Step 3: Cross multiply
    18,650.88x = 25,738.20 × 10,692.72
  4. Step 4: Simplify right side
    18,650.88x = 275,211,365.90
  5. Step 5: Solve for x
    x = 275,211,365.90/18,650.88
  6. Step 6: Final answer
    x = 14,755.95

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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.