Home / 11,431.29-15,772.23-7,183.02

Finding the Fourth Proportional to 11,431.29, 15,772.23 and 7,183.02

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Solution

The fourth proportional to 11,431.29, 15,772.23 and 7,183.02 is: 9,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.29 : 15,772.23 = 7,183.02 : x
  2. Step 2: Convert to fraction form
    11,431.29/15,772.23 = 7,183.02/x
  3. Step 3: Cross multiply
    11,431.29x = 15,772.23 × 7,183.02
  4. Step 4: Simplify right side
    11,431.29x = 113,292,243.53
  5. Step 5: Solve for x
    x = 113,292,243.53/11,431.29
  6. Step 6: Final answer
    x = 9,910.71

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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.