Home / 11,216.70-15,481.38-7,440.12

Finding the Fourth Proportional to 11,216.70, 15,481.38 and 7,440.12

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Solution

The fourth proportional to 11,216.70, 15,481.38 and 7,440.12 is: 10,268.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,216.70 : 15,481.38 = 7,440.12 : x
  2. Step 2: Convert to fraction form
    11,216.70/15,481.38 = 7,440.12/x
  3. Step 3: Cross multiply
    11,216.70x = 15,481.38 × 7,440.12
  4. Step 4: Simplify right side
    11,216.70x = 115,183,324.97
  5. Step 5: Solve for x
    x = 115,183,324.97/11,216.70
  6. Step 6: Final answer
    x = 10,268.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.