Home / 11,422.21-17,129.66-3,629.20

Finding the Fourth Proportional to 11,422.21, 17,129.66 and 3,629.20

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Solution

The fourth proportional to 11,422.21, 17,129.66 and 3,629.20 is: 5,442.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,422.21 : 17,129.66 = 3,629.20 : x
  2. Step 2: Convert to fraction form
    11,422.21/17,129.66 = 3,629.20/x
  3. Step 3: Cross multiply
    11,422.21x = 17,129.66 × 3,629.20
  4. Step 4: Simplify right side
    11,422.21x = 62,166,876.42
  5. Step 5: Solve for x
    x = 62,166,876.42/11,422.21
  6. Step 6: Final answer
    x = 5,442.63

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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.