Home / 11,718.78-17,578.38-4,319.44

Finding the Fourth Proportional to 11,718.78, 17,578.38 and 4,319.44

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Solution

The fourth proportional to 11,718.78, 17,578.38 and 4,319.44 is: 6,479.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.78 : 17,578.38 = 4,319.44 : x
  2. Step 2: Convert to fraction form
    11,718.78/17,578.38 = 4,319.44/x
  3. Step 3: Cross multiply
    11,718.78x = 17,578.38 × 4,319.44
  4. Step 4: Simplify right side
    11,718.78x = 75,928,757.71
  5. Step 5: Solve for x
    x = 75,928,757.71/11,718.78
  6. Step 6: Final answer
    x = 6,479.24

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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.