Home / 11,183.39-15,416.82-7,815.75

Finding the Fourth Proportional to 11,183.39, 15,416.82 and 7,815.75

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Solution

The fourth proportional to 11,183.39, 15,416.82 and 7,815.75 is: 10,774.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,183.39 : 15,416.82 = 7,815.75 : x
  2. Step 2: Convert to fraction form
    11,183.39/15,416.82 = 7,815.75/x
  3. Step 3: Cross multiply
    11,183.39x = 15,416.82 × 7,815.75
  4. Step 4: Simplify right side
    11,183.39x = 120,494,010.92
  5. Step 5: Solve for x
    x = 120,494,010.92/11,183.39
  6. Step 6: Final answer
    x = 10,774.38

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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.