Home / 11,949.40-17,928.92-5,378.68

Finding the Fourth Proportional to 11,949.40, 17,928.92 and 5,378.68

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Solution

The fourth proportional to 11,949.40, 17,928.92 and 5,378.68 is: 8,070.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.40 : 17,928.92 = 5,378.68 : x
  2. Step 2: Convert to fraction form
    11,949.40/17,928.92 = 5,378.68/x
  3. Step 3: Cross multiply
    11,949.40x = 17,928.92 × 5,378.68
  4. Step 4: Simplify right side
    11,949.40x = 96,433,923.43
  5. Step 5: Solve for x
    x = 96,433,923.43/11,949.40
  6. Step 6: Final answer
    x = 8,070.19

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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.