Home / 11,912.25-16,440.33-8,134.21

Finding the Fourth Proportional to 11,912.25, 16,440.33 and 8,134.21

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Solution

The fourth proportional to 11,912.25, 16,440.33 and 8,134.21 is: 11,226.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.25 : 16,440.33 = 8,134.21 : x
  2. Step 2: Convert to fraction form
    11,912.25/16,440.33 = 8,134.21/x
  3. Step 3: Cross multiply
    11,912.25x = 16,440.33 × 8,134.21
  4. Step 4: Simplify right side
    11,912.25x = 133,729,096.69
  5. Step 5: Solve for x
    x = 133,729,096.69/11,912.25
  6. Step 6: Final answer
    x = 11,226.18

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1.5x scale

Why These Related Problems?

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