Home / 11,777.30-17,663.99-3,879.90

Finding the Fourth Proportional to 11,777.30, 17,663.99 and 3,879.90

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Solution

The fourth proportional to 11,777.30, 17,663.99 and 3,879.90 is: 5,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,777.30 : 17,663.99 = 3,879.90 : x
  2. Step 2: Convert to fraction form
    11,777.30/17,663.99 = 3,879.90/x
  3. Step 3: Cross multiply
    11,777.30x = 17,663.99 × 3,879.90
  4. Step 4: Simplify right side
    11,777.30x = 68,534,495.40
  5. Step 5: Solve for x
    x = 68,534,495.40/11,777.30
  6. Step 6: Final answer
    x = 5,819.21

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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.