Home / 11,191.12-16,787.64-4,168.96

Finding the Fourth Proportional to 11,191.12, 16,787.64 and 4,168.96

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Solution

The fourth proportional to 11,191.12, 16,787.64 and 4,168.96 is: 6,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.12 : 16,787.64 = 4,168.96 : x
  2. Step 2: Convert to fraction form
    11,191.12/16,787.64 = 4,168.96/x
  3. Step 3: Cross multiply
    11,191.12x = 16,787.64 × 4,168.96
  4. Step 4: Simplify right side
    11,191.12x = 69,986,999.65
  5. Step 5: Solve for x
    x = 69,986,999.65/11,191.12
  6. Step 6: Final answer
    x = 6,253.80

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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.