Home / 11,980.09-17,979.45-7,819.03

Finding the Fourth Proportional to 11,980.09, 17,979.45 and 7,819.03

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Solution

The fourth proportional to 11,980.09, 17,979.45 and 7,819.03 is: 11,734.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,980.09 : 17,979.45 = 7,819.03 : x
  2. Step 2: Convert to fraction form
    11,980.09/17,979.45 = 7,819.03/x
  3. Step 3: Cross multiply
    11,980.09x = 17,979.45 × 7,819.03
  4. Step 4: Simplify right side
    11,980.09x = 140,581,858.93
  5. Step 5: Solve for x
    x = 140,581,858.93/11,980.09
  6. Step 6: Final answer
    x = 11,734.62

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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.