Home / 20,149.10-27,803.26-11,198.47

Finding the Fourth Proportional to 20,149.10, 27,803.26 and 11,198.47

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Solution

The fourth proportional to 20,149.10, 27,803.26 and 11,198.47 is: 15,452.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.10 : 27,803.26 = 11,198.47 : x
  2. Step 2: Convert to fraction form
    20,149.10/27,803.26 = 11,198.47/x
  3. Step 3: Cross multiply
    20,149.10x = 27,803.26 × 11,198.47
  4. Step 4: Simplify right side
    20,149.10x = 311,353,868.09
  5. Step 5: Solve for x
    x = 311,353,868.09/20,149.10
  6. Step 6: Final answer
    x = 15,452.49

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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.