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Finding the Fourth Proportional to 16,243.88, 22,416.55 and 8,791.88

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Solution

The fourth proportional to 16,243.88, 22,416.55 and 8,791.88 is: 12,132.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,243.88 : 22,416.55 = 8,791.88 : x
  2. Step 2: Convert to fraction form
    16,243.88/22,416.55 = 8,791.88/x
  3. Step 3: Cross multiply
    16,243.88x = 22,416.55 × 8,791.88
  4. Step 4: Simplify right side
    16,243.88x = 197,083,483.55
  5. Step 5: Solve for x
    x = 197,083,483.55/16,243.88
  6. Step 6: Final answer
    x = 12,132.79

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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.