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Finding the Fourth Proportional to 20,071.88, 30,093.24 and 8,388.44

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Solution

The fourth proportional to 20,071.88, 30,093.24 and 8,388.44 is: 12,576.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.88 : 30,093.24 = 8,388.44 : x
  2. Step 2: Convert to fraction form
    20,071.88/30,093.24 = 8,388.44/x
  3. Step 3: Cross multiply
    20,071.88x = 30,093.24 × 8,388.44
  4. Step 4: Simplify right side
    20,071.88x = 252,435,338.15
  5. Step 5: Solve for x
    x = 252,435,338.15/20,071.88
  6. Step 6: Final answer
    x = 12,576.57

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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.