Home / 11,879.60-17,816.96-4,089.02

Finding the Fourth Proportional to 11,879.60, 17,816.96 and 4,089.02

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Solution

The fourth proportional to 11,879.60, 17,816.96 and 4,089.02 is: 6,132.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.60 : 17,816.96 = 4,089.02 : x
  2. Step 2: Convert to fraction form
    11,879.60/17,816.96 = 4,089.02/x
  3. Step 3: Cross multiply
    11,879.60x = 17,816.96 × 4,089.02
  4. Step 4: Simplify right side
    11,879.60x = 72,853,905.78
  5. Step 5: Solve for x
    x = 72,853,905.78/11,879.60
  6. Step 6: Final answer
    x = 6,132.69

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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.