Home / 13,287.43-19,933.29-3,928.39

Finding the Fourth Proportional to 13,287.43, 19,933.29 and 3,928.39

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Solution

The fourth proportional to 13,287.43, 19,933.29 and 3,928.39 is: 5,893.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.43 : 19,933.29 = 3,928.39 : x
  2. Step 2: Convert to fraction form
    13,287.43/19,933.29 = 3,928.39/x
  3. Step 3: Cross multiply
    13,287.43x = 19,933.29 × 3,928.39
  4. Step 4: Simplify right side
    13,287.43x = 78,305,637.44
  5. Step 5: Solve for x
    x = 78,305,637.44/13,287.43
  6. Step 6: Final answer
    x = 5,893.21

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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.