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Finding the Fourth Proportional to 11,123.80, 16,704.90 and 5,939.80

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Solution

The fourth proportional to 11,123.80, 16,704.90 and 5,939.80 is: 8,919.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.80 : 16,704.90 = 5,939.80 : x
  2. Step 2: Convert to fraction form
    11,123.80/16,704.90 = 5,939.80/x
  3. Step 3: Cross multiply
    11,123.80x = 16,704.90 × 5,939.80
  4. Step 4: Simplify right side
    11,123.80x = 99,223,765.02
  5. Step 5: Solve for x
    x = 99,223,765.02/11,123.80
  6. Step 6: Final answer
    x = 8,919.95

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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.