Home / 21,731.20-32,621.10-16,822.60

Finding the Fourth Proportional to 21,731.20, 32,621.10 and 16,822.60

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Solution

The fourth proportional to 21,731.20, 32,621.10 and 16,822.60 is: 25,252.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,731.20 : 32,621.10 = 16,822.60 : x
  2. Step 2: Convert to fraction form
    21,731.20/32,621.10 = 16,822.60/x
  3. Step 3: Cross multiply
    21,731.20x = 32,621.10 × 16,822.60
  4. Step 4: Simplify right side
    21,731.20x = 548,771,716.86
  5. Step 5: Solve for x
    x = 548,771,716.86/21,731.20
  6. Step 6: Final answer
    x = 25,252.71

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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.