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Finding the Fourth Proportional to 20,277, 30,415.37 and 5,487.44

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Solution

The fourth proportional to 20,277, 30,415.37 and 5,487.44 is: 8,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277 : 30,415.37 = 5,487.44 : x
  2. Step 2: Convert to fraction form
    20,277/30,415.37 = 5,487.44/x
  3. Step 3: Cross multiply
    20,277x = 30,415.37 × 5,487.44
  4. Step 4: Simplify right side
    20,277x = 166,902,338.44
  5. Step 5: Solve for x
    x = 166,902,338.44/20,277
  6. Step 6: Final answer
    x = 8,231.12

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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.