Home / 13,843.32-20,767.72-5,078.31

Finding the Fourth Proportional to 13,843.32, 20,767.72 and 5,078.31

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Solution

The fourth proportional to 13,843.32, 20,767.72 and 5,078.31 is: 7,618.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,843.32 : 20,767.72 = 5,078.31 : x
  2. Step 2: Convert to fraction form
    13,843.32/20,767.72 = 5,078.31/x
  3. Step 3: Cross multiply
    13,843.32x = 20,767.72 × 5,078.31
  4. Step 4: Simplify right side
    13,843.32x = 105,464,920.15
  5. Step 5: Solve for x
    x = 105,464,920.15/13,843.32
  6. Step 6: Final answer
    x = 7,618.47

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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.