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Finding the Fourth Proportional to 18,717, 28,080.36 and 7,033.56

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Solution

The fourth proportional to 18,717, 28,080.36 and 7,033.56 is: 10,552.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717 : 28,080.36 = 7,033.56 : x
  2. Step 2: Convert to fraction form
    18,717/28,080.36 = 7,033.56/x
  3. Step 3: Cross multiply
    18,717x = 28,080.36 × 7,033.56
  4. Step 4: Simplify right side
    18,717x = 197,504,896.88
  5. Step 5: Solve for x
    x = 197,504,896.88/18,717
  6. Step 6: Final answer
    x = 10,552.17

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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.