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Finding the Fourth Proportional to 22,190.80, 33,276.67 and 8,146.21

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Solution

The fourth proportional to 22,190.80, 33,276.67 and 8,146.21 is: 12,215.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.80 : 33,276.67 = 8,146.21 : x
  2. Step 2: Convert to fraction form
    22,190.80/33,276.67 = 8,146.21/x
  3. Step 3: Cross multiply
    22,190.80x = 33,276.67 × 8,146.21
  4. Step 4: Simplify right side
    22,190.80x = 271,078,741.92
  5. Step 5: Solve for x
    x = 271,078,741.92/22,190.80
  6. Step 6: Final answer
    x = 12,215.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.