Home / 12,134.82-18,207.09-3,816.12

Finding the Fourth Proportional to 12,134.82, 18,207.09 and 3,816.12

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Solution

The fourth proportional to 12,134.82, 18,207.09 and 3,816.12 is: 5,725.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,134.82 : 18,207.09 = 3,816.12 : x
  2. Step 2: Convert to fraction form
    12,134.82/18,207.09 = 3,816.12/x
  3. Step 3: Cross multiply
    12,134.82x = 18,207.09 × 3,816.12
  4. Step 4: Simplify right side
    12,134.82x = 69,480,440.29
  5. Step 5: Solve for x
    x = 69,480,440.29/12,134.82
  6. Step 6: Final answer
    x = 5,725.71

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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.