Home / 11,431.57-15,765.30-7,183.03

Finding the Fourth Proportional to 11,431.57, 15,765.30 and 7,183.03

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Solution

The fourth proportional to 11,431.57, 15,765.30 and 7,183.03 is: 9,906.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.57 : 15,765.30 = 7,183.03 : x
  2. Step 2: Convert to fraction form
    11,431.57/15,765.30 = 7,183.03/x
  3. Step 3: Cross multiply
    11,431.57x = 15,765.30 × 7,183.03
  4. Step 4: Simplify right side
    11,431.57x = 113,242,622.86
  5. Step 5: Solve for x
    x = 113,242,622.86/11,431.57
  6. Step 6: Final answer
    x = 9,906.13

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Half scale
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Double scale
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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.