Home / 11,712.78-17,571.52-4,317.28

Finding the Fourth Proportional to 11,712.78, 17,571.52 and 4,317.28

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Solution

The fourth proportional to 11,712.78, 17,571.52 and 4,317.28 is: 6,476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.78 : 17,571.52 = 4,317.28 : x
  2. Step 2: Convert to fraction form
    11,712.78/17,571.52 = 4,317.28/x
  3. Step 3: Cross multiply
    11,712.78x = 17,571.52 × 4,317.28
  4. Step 4: Simplify right side
    11,712.78x = 75,861,171.87
  5. Step 5: Solve for x
    x = 75,861,171.87/11,712.78
  6. Step 6: Final answer
    x = 6,476.79

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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.