Home / 11,218.50-15,479.91-7,183.08

Finding the Fourth Proportional to 11,218.50, 15,479.91 and 7,183.08

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Solution

The fourth proportional to 11,218.50, 15,479.91 and 7,183.08 is: 9,911.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.50 : 15,479.91 = 7,183.08 : x
  2. Step 2: Convert to fraction form
    11,218.50/15,479.91 = 7,183.08/x
  3. Step 3: Cross multiply
    11,218.50x = 15,479.91 × 7,183.08
  4. Step 4: Simplify right side
    11,218.50x = 111,193,431.92
  5. Step 5: Solve for x
    x = 111,193,431.92/11,218.50
  6. Step 6: Final answer
    x = 9,911.61

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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.