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Finding the Fourth Proportional to 36,519, 50,396.22 and 21,615

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Solution

The fourth proportional to 36,519, 50,396.22 and 21,615 is: 29,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,519 : 50,396.22 = 21,615 : x
  2. Step 2: Convert to fraction form
    36,519/50,396.22 = 21,615/x
  3. Step 3: Cross multiply
    36,519x = 50,396.22 × 21,615
  4. Step 4: Simplify right side
    36,519x = 1,089,314,295.30
  5. Step 5: Solve for x
    x = 1,089,314,295.30/36,519
  6. Step 6: Final answer
    x = 29,828.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.