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Finding the Fourth Proportional to 16,790.38, 23,170.74 and 9,338.38

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Solution

The fourth proportional to 16,790.38, 23,170.74 and 9,338.38 is: 12,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,790.38 : 23,170.74 = 9,338.38 : x
  2. Step 2: Convert to fraction form
    16,790.38/23,170.74 = 9,338.38/x
  3. Step 3: Cross multiply
    16,790.38x = 23,170.74 × 9,338.38
  4. Step 4: Simplify right side
    16,790.38x = 216,377,175.00
  5. Step 5: Solve for x
    x = 216,377,175.00/16,790.38
  6. Step 6: Final answer
    x = 12,886.97

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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.