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Finding the Fourth Proportional to 18,803.27, 28,205.10 and 8,943.54

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Solution

The fourth proportional to 18,803.27, 28,205.10 and 8,943.54 is: 13,415.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.27 : 28,205.10 = 8,943.54 : x
  2. Step 2: Convert to fraction form
    18,803.27/28,205.10 = 8,943.54/x
  3. Step 3: Cross multiply
    18,803.27x = 28,205.10 × 8,943.54
  4. Step 4: Simplify right side
    18,803.27x = 252,253,440.05
  5. Step 5: Solve for x
    x = 252,253,440.05/18,803.27
  6. Step 6: Final answer
    x = 13,415.41

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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.