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Finding the Fourth Proportional to 16,243.80, 22,416.36 and 8,791.80

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Solution

The fourth proportional to 16,243.80, 22,416.36 and 8,791.80 is: 12,132.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,243.80 : 22,416.36 = 8,791.80 : x
  2. Step 2: Convert to fraction form
    16,243.80/22,416.36 = 8,791.80/x
  3. Step 3: Cross multiply
    16,243.80x = 22,416.36 × 8,791.80
  4. Step 4: Simplify right side
    16,243.80x = 197,080,153.85
  5. Step 5: Solve for x
    x = 197,080,153.85/16,243.80
  6. Step 6: Final answer
    x = 12,132.64

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1.5x scale

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.