Home / 20,629.44-28,468.69-11,198.00

Finding the Fourth Proportional to 20,629.44, 28,468.69 and 11,198.00

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Solution

The fourth proportional to 20,629.44, 28,468.69 and 11,198.00 is: 15,453.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.44 : 28,468.69 = 11,198.00 : x
  2. Step 2: Convert to fraction form
    20,629.44/28,468.69 = 11,198.00/x
  3. Step 3: Cross multiply
    20,629.44x = 28,468.69 × 11,198.00
  4. Step 4: Simplify right side
    20,629.44x = 318,792,433.80
  5. Step 5: Solve for x
    x = 318,792,433.80/20,629.44
  6. Step 6: Final answer
    x = 15,453.28

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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.