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Finding the Fourth Proportional to 22,165.60, 33,183.60 and 21,517.60

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Solution

The fourth proportional to 22,165.60, 33,183.60 and 21,517.60 is: 32,213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,165.60 : 33,183.60 = 21,517.60 : x
  2. Step 2: Convert to fraction form
    22,165.60/33,183.60 = 21,517.60/x
  3. Step 3: Cross multiply
    22,165.60x = 33,183.60 × 21,517.60
  4. Step 4: Simplify right side
    22,165.60x = 714,031,431.36
  5. Step 5: Solve for x
    x = 714,031,431.36/22,165.60
  6. Step 6: Final answer
    x = 32,213.49

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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.