Home / 11,918.06-17,872.52-4,124.78

Finding the Fourth Proportional to 11,918.06, 17,872.52 and 4,124.78

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Solution

The fourth proportional to 11,918.06, 17,872.52 and 4,124.78 is: 6,185.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.06 : 17,872.52 = 4,124.78 : x
  2. Step 2: Convert to fraction form
    11,918.06/17,872.52 = 4,124.78/x
  3. Step 3: Cross multiply
    11,918.06x = 17,872.52 × 4,124.78
  4. Step 4: Simplify right side
    11,918.06x = 73,720,213.05
  5. Step 5: Solve for x
    x = 73,720,213.05/11,918.06
  6. Step 6: Final answer
    x = 6,185.59

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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.