Home / 13,456.82-20,185.16-5,665.64

Finding the Fourth Proportional to 13,456.82, 20,185.16 and 5,665.64

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Solution

The fourth proportional to 13,456.82, 20,185.16 and 5,665.64 is: 8,498.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,456.82 : 20,185.16 = 5,665.64 : x
  2. Step 2: Convert to fraction form
    13,456.82/20,185.16 = 5,665.64/x
  3. Step 3: Cross multiply
    13,456.82x = 20,185.16 × 5,665.64
  4. Step 4: Simplify right side
    13,456.82x = 114,361,720.65
  5. Step 5: Solve for x
    x = 114,361,720.65/13,456.82
  6. Step 6: Final answer
    x = 8,498.42

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1.5x scale

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.