Home / 11,251.26-15,519.87-7,889.22

Finding the Fourth Proportional to 11,251.26, 15,519.87 and 7,889.22

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Solution

The fourth proportional to 11,251.26, 15,519.87 and 7,889.22 is: 10,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,251.26 : 15,519.87 = 7,889.22 : x
  2. Step 2: Convert to fraction form
    11,251.26/15,519.87 = 7,889.22/x
  3. Step 3: Cross multiply
    11,251.26x = 15,519.87 × 7,889.22
  4. Step 4: Simplify right side
    11,251.26x = 122,439,668.80
  5. Step 5: Solve for x
    x = 122,439,668.80/11,251.26
  6. Step 6: Final answer
    x = 10,882.31

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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.