Home / 11,183.40-16,778.70-7,489.80

Finding the Fourth Proportional to 11,183.40, 16,778.70 and 7,489.80

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Solution

The fourth proportional to 11,183.40, 16,778.70 and 7,489.80 is: 11,237.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,183.40 : 16,778.70 = 7,489.80 : x
  2. Step 2: Convert to fraction form
    11,183.40/16,778.70 = 7,489.80/x
  3. Step 3: Cross multiply
    11,183.40x = 16,778.70 × 7,489.80
  4. Step 4: Simplify right side
    11,183.40x = 125,669,107.26
  5. Step 5: Solve for x
    x = 125,669,107.26/11,183.40
  6. Step 6: Final answer
    x = 11,237.11

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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.