Home / 14,481.92-19,980.40-8,107.57

Finding the Fourth Proportional to 14,481.92, 19,980.40 and 8,107.57

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Solution

The fourth proportional to 14,481.92, 19,980.40 and 8,107.57 is: 11,185.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,481.92 : 19,980.40 = 8,107.57 : x
  2. Step 2: Convert to fraction form
    14,481.92/19,980.40 = 8,107.57/x
  3. Step 3: Cross multiply
    14,481.92x = 19,980.40 × 8,107.57
  4. Step 4: Simplify right side
    14,481.92x = 161,992,451.09
  5. Step 5: Solve for x
    x = 161,992,451.09/14,481.92
  6. Step 6: Final answer
    x = 11,185.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.