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Finding the Fourth Proportional to 20,640.58, 30,951.42 and 6,597.88

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Solution

The fourth proportional to 20,640.58, 30,951.42 and 6,597.88 is: 9,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.58 : 30,951.42 = 6,597.88 : x
  2. Step 2: Convert to fraction form
    20,640.58/30,951.42 = 6,597.88/x
  3. Step 3: Cross multiply
    20,640.58x = 30,951.42 × 6,597.88
  4. Step 4: Simplify right side
    20,640.58x = 204,213,754.99
  5. Step 5: Solve for x
    x = 204,213,754.99/20,640.58
  6. Step 6: Final answer
    x = 9,893.80

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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.