Home / 20,629.44-30,934.56-7,481.28

Finding the Fourth Proportional to 20,629.44, 30,934.56 and 7,481.28

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Solution

The fourth proportional to 20,629.44, 30,934.56 and 7,481.28 is: 11,218.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.44 : 30,934.56 = 7,481.28 : x
  2. Step 2: Convert to fraction form
    20,629.44/30,934.56 = 7,481.28/x
  3. Step 3: Cross multiply
    20,629.44x = 30,934.56 × 7,481.28
  4. Step 4: Simplify right side
    20,629.44x = 231,430,105.04
  5. Step 5: Solve for x
    x = 231,430,105.04/20,629.44
  6. Step 6: Final answer
    x = 11,218.44

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1.5x scale

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.