Home / 11,927.78-17,880.72-4,131.14

Finding the Fourth Proportional to 11,927.78, 17,880.72 and 4,131.14

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Solution

The fourth proportional to 11,927.78, 17,880.72 and 4,131.14 is: 6,192.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,927.78 : 17,880.72 = 4,131.14 : x
  2. Step 2: Convert to fraction form
    11,927.78/17,880.72 = 4,131.14/x
  3. Step 3: Cross multiply
    11,927.78x = 17,880.72 × 4,131.14
  4. Step 4: Simplify right side
    11,927.78x = 73,867,757.62
  5. Step 5: Solve for x
    x = 73,867,757.62/11,927.78
  6. Step 6: Final answer
    x = 6,192.92

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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.