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Finding the Fourth Proportional to 21,791.63, 32,687.45 and 5,375.63

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Solution

The fourth proportional to 21,791.63, 32,687.45 and 5,375.63 is: 8,063.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,791.63 : 32,687.45 = 5,375.63 : x
  2. Step 2: Convert to fraction form
    21,791.63/32,687.45 = 5,375.63/x
  3. Step 3: Cross multiply
    21,791.63x = 32,687.45 × 5,375.63
  4. Step 4: Simplify right side
    21,791.63x = 175,715,446.53
  5. Step 5: Solve for x
    x = 175,715,446.53/21,791.63
  6. Step 6: Final answer
    x = 8,063.44

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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.