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Finding the Fourth Proportional to 22,107.28, 33,170.64 and 7,318.32

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Solution

The fourth proportional to 22,107.28, 33,170.64 and 7,318.32 is: 10,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,107.28 : 33,170.64 = 7,318.32 : x
  2. Step 2: Convert to fraction form
    22,107.28/33,170.64 = 7,318.32/x
  3. Step 3: Cross multiply
    22,107.28x = 33,170.64 × 7,318.32
  4. Step 4: Simplify right side
    22,107.28x = 242,753,358.12
  5. Step 5: Solve for x
    x = 242,753,358.12/22,107.28
  6. Step 6: Final answer
    x = 10,980.70

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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.