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Finding the Fourth Proportional to 18,883.44, 28,296 and 7,190.28

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Solution

The fourth proportional to 18,883.44, 28,296 and 7,190.28 is: 10,774.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.44 : 28,296 = 7,190.28 : x
  2. Step 2: Convert to fraction form
    18,883.44/28,296 = 7,190.28/x
  3. Step 3: Cross multiply
    18,883.44x = 28,296 × 7,190.28
  4. Step 4: Simplify right side
    18,883.44x = 203,456,162.88
  5. Step 5: Solve for x
    x = 203,456,162.88/18,883.44
  6. Step 6: Final answer
    x = 10,774.32

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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.