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Finding the Fourth Proportional to 22,079.76, 33,143.22 and 8,940.72

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Solution

The fourth proportional to 22,079.76, 33,143.22 and 8,940.72 is: 13,420.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,079.76 : 33,143.22 = 8,940.72 : x
  2. Step 2: Convert to fraction form
    22,079.76/33,143.22 = 8,940.72/x
  3. Step 3: Cross multiply
    22,079.76x = 33,143.22 × 8,940.72
  4. Step 4: Simplify right side
    22,079.76x = 296,324,249.92
  5. Step 5: Solve for x
    x = 296,324,249.92/22,079.76
  6. Step 6: Final answer
    x = 13,420.63

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1.5x scale

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.