Home / 11,912.15-16,439.32-6,606.65

Finding the Fourth Proportional to 11,912.15, 16,439.32 and 6,606.65

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Solution

The fourth proportional to 11,912.15, 16,439.32 and 6,606.65 is: 9,117.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.15 : 16,439.32 = 6,606.65 : x
  2. Step 2: Convert to fraction form
    11,912.15/16,439.32 = 6,606.65/x
  3. Step 3: Cross multiply
    11,912.15x = 16,439.32 × 6,606.65
  4. Step 4: Simplify right side
    11,912.15x = 108,608,833.48
  5. Step 5: Solve for x
    x = 108,608,833.48/11,912.15
  6. Step 6: Final answer
    x = 9,117.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.