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Finding the Fourth Proportional to 11,169.80, 16,773.90 and 7,905.80

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Solution

The fourth proportional to 11,169.80, 16,773.90 and 7,905.80 is: 11,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.80 : 16,773.90 = 7,905.80 : x
  2. Step 2: Convert to fraction form
    11,169.80/16,773.90 = 7,905.80/x
  3. Step 3: Cross multiply
    11,169.80x = 16,773.90 × 7,905.80
  4. Step 4: Simplify right side
    11,169.80x = 132,611,098.62
  5. Step 5: Solve for x
    x = 132,611,098.62/11,169.80
  6. Step 6: Final answer
    x = 11,872.29

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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.