Home / 11,991.24-16,556.40-7,516.80

Finding the Fourth Proportional to 11,991.24, 16,556.40 and 7,516.80

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Solution

The fourth proportional to 11,991.24, 16,556.40 and 7,516.80 is: 10,378.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.24 : 16,556.40 = 7,516.80 : x
  2. Step 2: Convert to fraction form
    11,991.24/16,556.40 = 7,516.80/x
  3. Step 3: Cross multiply
    11,991.24x = 16,556.40 × 7,516.80
  4. Step 4: Simplify right side
    11,991.24x = 124,451,147.52
  5. Step 5: Solve for x
    x = 124,451,147.52/11,991.24
  6. Step 6: Final answer
    x = 10,378.51

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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.