Home / 12,928.25-19,392.38-3,694.25

Finding the Fourth Proportional to 12,928.25, 19,392.38 and 3,694.25

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Solution

The fourth proportional to 12,928.25, 19,392.38 and 3,694.25 is: 5,541.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.25 : 19,392.38 = 3,694.25 : x
  2. Step 2: Convert to fraction form
    12,928.25/19,392.38 = 3,694.25/x
  3. Step 3: Cross multiply
    12,928.25x = 19,392.38 × 3,694.25
  4. Step 4: Simplify right side
    12,928.25x = 71,640,299.82
  5. Step 5: Solve for x
    x = 71,640,299.82/12,928.25
  6. Step 6: Final answer
    x = 5,541.38

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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.