Home / 20,629.14-28,468.80-11,198.31

Finding the Fourth Proportional to 20,629.14, 28,468.80 and 11,198.31

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Solution

The fourth proportional to 20,629.14, 28,468.80 and 11,198.31 is: 15,453.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.14 : 28,468.80 = 11,198.31 : x
  2. Step 2: Convert to fraction form
    20,629.14/28,468.80 = 11,198.31/x
  3. Step 3: Cross multiply
    20,629.14x = 28,468.80 × 11,198.31
  4. Step 4: Simplify right side
    20,629.14x = 318,802,447.73
  5. Step 5: Solve for x
    x = 318,802,447.73/20,629.14
  6. Step 6: Final answer
    x = 15,453.99

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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.