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Finding the Fourth Proportional to 18,803.52, 28,205.48 and 8,943.79

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Solution

The fourth proportional to 18,803.52, 28,205.48 and 8,943.79 is: 13,415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.52 : 28,205.48 = 8,943.79 : x
  2. Step 2: Convert to fraction form
    18,803.52/28,205.48 = 8,943.79/x
  3. Step 3: Cross multiply
    18,803.52x = 28,205.48 × 8,943.79
  4. Step 4: Simplify right side
    18,803.52x = 252,263,889.97
  5. Step 5: Solve for x
    x = 252,263,889.97/18,803.52
  6. Step 6: Final answer
    x = 13,415.78

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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.