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Finding the Fourth Proportional to 31,787.69, 43,850.44 and 18,859.44

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Solution

The fourth proportional to 31,787.69, 43,850.44 and 18,859.44 is: 26,016.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.69 : 43,850.44 = 18,859.44 : x
  2. Step 2: Convert to fraction form
    31,787.69/43,850.44 = 18,859.44/x
  3. Step 3: Cross multiply
    31,787.69x = 43,850.44 × 18,859.44
  4. Step 4: Simplify right side
    31,787.69x = 826,994,930.17
  5. Step 5: Solve for x
    x = 826,994,930.17/31,787.69
  6. Step 6: Final answer
    x = 26,016.21

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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.