Home / 20,519.82-30,760.44-11,146.08

Finding the Fourth Proportional to 20,519.82, 30,760.44 and 11,146.08

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Solution

The fourth proportional to 20,519.82, 30,760.44 and 11,146.08 is: 16,708.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.82 : 30,760.44 = 11,146.08 : x
  2. Step 2: Convert to fraction form
    20,519.82/30,760.44 = 11,146.08/x
  3. Step 3: Cross multiply
    20,519.82x = 30,760.44 × 11,146.08
  4. Step 4: Simplify right side
    20,519.82x = 342,858,325.08
  5. Step 5: Solve for x
    x = 342,858,325.08/20,519.82
  6. Step 6: Final answer
    x = 16,708.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.