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Finding the Fourth Proportional to 28,805, 39,751.02 and 16,229.96

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Solution

The fourth proportional to 28,805, 39,751.02 and 16,229.96 is: 22,397.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,805 : 39,751.02 = 16,229.96 : x
  2. Step 2: Convert to fraction form
    28,805/39,751.02 = 16,229.96/x
  3. Step 3: Cross multiply
    28,805x = 39,751.02 × 16,229.96
  4. Step 4: Simplify right side
    28,805x = 645,157,464.56
  5. Step 5: Solve for x
    x = 645,157,464.56/28,805
  6. Step 6: Final answer
    x = 22,397.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.