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Finding the Fourth Proportional to 18,313.44, 27,481.44 and 7,218.24

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Solution

The fourth proportional to 18,313.44, 27,481.44 and 7,218.24 is: 10,831.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.44 : 27,481.44 = 7,218.24 : x
  2. Step 2: Convert to fraction form
    18,313.44/27,481.44 = 7,218.24/x
  3. Step 3: Cross multiply
    18,313.44x = 27,481.44 × 7,218.24
  4. Step 4: Simplify right side
    18,313.44x = 198,367,629.47
  5. Step 5: Solve for x
    x = 198,367,629.47/18,313.44
  6. Step 6: Final answer
    x = 10,831.81

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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.