Home / 11,825.16-17,738.28-4,427.72

Finding the Fourth Proportional to 11,825.16, 17,738.28 and 4,427.72

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Solution

The fourth proportional to 11,825.16, 17,738.28 and 4,427.72 is: 6,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,825.16 : 17,738.28 = 4,427.72 : x
  2. Step 2: Convert to fraction form
    11,825.16/17,738.28 = 4,427.72/x
  3. Step 3: Cross multiply
    11,825.16x = 17,738.28 × 4,427.72
  4. Step 4: Simplify right side
    11,825.16x = 78,540,137.12
  5. Step 5: Solve for x
    x = 78,540,137.12/11,825.16
  6. Step 6: Final answer
    x = 6,641.78

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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.