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Finding the Fourth Proportional to 17,858.87, 26,787.23 and 5,378.58

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Solution

The fourth proportional to 17,858.87, 26,787.23 and 5,378.58 is: 8,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,858.87 : 26,787.23 = 5,378.58 : x
  2. Step 2: Convert to fraction form
    17,858.87/26,787.23 = 5,378.58/x
  3. Step 3: Cross multiply
    17,858.87x = 26,787.23 × 5,378.58
  4. Step 4: Simplify right side
    17,858.87x = 144,077,232.64
  5. Step 5: Solve for x
    x = 144,077,232.64/17,858.87
  6. Step 6: Final answer
    x = 8,067.55

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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.