Home / 20,147.37-30,221.07-7,664.52

Finding the Fourth Proportional to 20,147.37, 30,221.07 and 7,664.52

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Solution

The fourth proportional to 20,147.37, 30,221.07 and 7,664.52 is: 11,496.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.37 : 30,221.07 = 7,664.52 : x
  2. Step 2: Convert to fraction form
    20,147.37/30,221.07 = 7,664.52/x
  3. Step 3: Cross multiply
    20,147.37x = 30,221.07 × 7,664.52
  4. Step 4: Simplify right side
    20,147.37x = 231,629,995.44
  5. Step 5: Solve for x
    x = 231,629,995.44/20,147.37
  6. Step 6: Final answer
    x = 11,496.79

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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.