Home / 11,943.78-17,908.38-4,921.62

Finding the Fourth Proportional to 11,943.78, 17,908.38 and 4,921.62

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Solution

The fourth proportional to 11,943.78, 17,908.38 and 4,921.62 is: 7,379.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.78 : 17,908.38 = 4,921.62 : x
  2. Step 2: Convert to fraction form
    11,943.78/17,908.38 = 4,921.62/x
  3. Step 3: Cross multiply
    11,943.78x = 17,908.38 × 4,921.62
  4. Step 4: Simplify right side
    11,943.78x = 88,138,241.18
  5. Step 5: Solve for x
    x = 88,138,241.18/11,943.78
  6. Step 6: Final answer
    x = 7,379.43

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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.