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Finding the Fourth Proportional to 18,678, 28,019.04 and 7,583.04

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Solution

The fourth proportional to 18,678, 28,019.04 and 7,583.04 is: 11,375.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678 : 28,019.04 = 7,583.04 : x
  2. Step 2: Convert to fraction form
    18,678/28,019.04 = 7,583.04/x
  3. Step 3: Cross multiply
    18,678x = 28,019.04 × 7,583.04
  4. Step 4: Simplify right side
    18,678x = 212,469,501.08
  5. Step 5: Solve for x
    x = 212,469,501.08/18,678
  6. Step 6: Final answer
    x = 11,375.39

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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.