Home / 11,313.80-16,979.89-4,744.60

Finding the Fourth Proportional to 11,313.80, 16,979.89 and 4,744.60

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Solution

The fourth proportional to 11,313.80, 16,979.89 and 4,744.60 is: 7,120.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,313.80 : 16,979.89 = 4,744.60 : x
  2. Step 2: Convert to fraction form
    11,313.80/16,979.89 = 4,744.60/x
  3. Step 3: Cross multiply
    11,313.80x = 16,979.89 × 4,744.60
  4. Step 4: Simplify right side
    11,313.80x = 80,562,786.09
  5. Step 5: Solve for x
    x = 80,562,786.09/11,313.80
  6. Step 6: Final answer
    x = 7,120.75

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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.