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Finding the Fourth Proportional to 28,838.25, 39,798 and 16,263

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Solution

The fourth proportional to 28,838.25, 39,798 and 16,263 is: 22,443.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838.25 : 39,798 = 16,263 : x
  2. Step 2: Convert to fraction form
    28,838.25/39,798 = 16,263/x
  3. Step 3: Cross multiply
    28,838.25x = 39,798 × 16,263
  4. Step 4: Simplify right side
    28,838.25x = 647,234,874
  5. Step 5: Solve for x
    x = 647,234,874/28,838.25
  6. Step 6: Final answer
    x = 22,443.63

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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.