Home / 13,939.91-20,874.20-7,692.98

Finding the Fourth Proportional to 13,939.91, 20,874.20 and 7,692.98

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Solution

The fourth proportional to 13,939.91, 20,874.20 and 7,692.98 is: 11,519.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.91 : 20,874.20 = 7,692.98 : x
  2. Step 2: Convert to fraction form
    13,939.91/20,874.20 = 7,692.98/x
  3. Step 3: Cross multiply
    13,939.91x = 20,874.20 × 7,692.98
  4. Step 4: Simplify right side
    13,939.91x = 160,584,660.28
  5. Step 5: Solve for x
    x = 160,584,660.28/13,939.91
  6. Step 6: Final answer
    x = 11,519.78

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1.5x scale

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.