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Finding the Fourth Proportional to 18,868.97, 26,042.57 and 12,162.98

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Solution

The fourth proportional to 18,868.97, 26,042.57 and 12,162.98 is: 16,787.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.97 : 26,042.57 = 12,162.98 : x
  2. Step 2: Convert to fraction form
    18,868.97/26,042.57 = 12,162.98/x
  3. Step 3: Cross multiply
    18,868.97x = 26,042.57 × 12,162.98
  4. Step 4: Simplify right side
    18,868.97x = 316,755,067.03
  5. Step 5: Solve for x
    x = 316,755,067.03/18,868.97
  6. Step 6: Final answer
    x = 16,787.09

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1.5x scale

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.