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Finding the Fourth Proportional to 28,162, 42,226.60 and 12,366.39

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Solution

The fourth proportional to 28,162, 42,226.60 and 12,366.39 is: 18,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162 : 42,226.60 = 12,366.39 : x
  2. Step 2: Convert to fraction form
    28,162/42,226.60 = 12,366.39/x
  3. Step 3: Cross multiply
    28,162x = 42,226.60 × 12,366.39
  4. Step 4: Simplify right side
    28,162x = 522,190,603.97
  5. Step 5: Solve for x
    x = 522,190,603.97/28,162
  6. Step 6: Final answer
    x = 18,542.38

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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.