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Finding the Fourth Proportional to 14,692.92, 20,279.94 and 8,728.80

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Solution

The fourth proportional to 14,692.92, 20,279.94 and 8,728.80 is: 12,047.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,692.92 : 20,279.94 = 8,728.80 : x
  2. Step 2: Convert to fraction form
    14,692.92/20,279.94 = 8,728.80/x
  3. Step 3: Cross multiply
    14,692.92x = 20,279.94 × 8,728.80
  4. Step 4: Simplify right side
    14,692.92x = 177,019,540.27
  5. Step 5: Solve for x
    x = 177,019,540.27/14,692.92
  6. Step 6: Final answer
    x = 12,047.95

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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.