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Finding the Fourth Proportional to 22,469.12, 33,708.48 and 8,618

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Solution

The fourth proportional to 22,469.12, 33,708.48 and 8,618 is: 12,928.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,469.12 : 33,708.48 = 8,618 : x
  2. Step 2: Convert to fraction form
    22,469.12/33,708.48 = 8,618/x
  3. Step 3: Cross multiply
    22,469.12x = 33,708.48 × 8,618
  4. Step 4: Simplify right side
    22,469.12x = 290,499,680.64
  5. Step 5: Solve for x
    x = 290,499,680.64/22,469.12
  6. Step 6: Final answer
    x = 12,928.84

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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.