Home / 11,804.20-17,712.70-4,879.40

Finding the Fourth Proportional to 11,804.20, 17,712.70 and 4,879.40

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Solution

The fourth proportional to 11,804.20, 17,712.70 and 4,879.40 is: 7,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,804.20 : 17,712.70 = 4,879.40 : x
  2. Step 2: Convert to fraction form
    11,804.20/17,712.70 = 4,879.40/x
  3. Step 3: Cross multiply
    11,804.20x = 17,712.70 × 4,879.40
  4. Step 4: Simplify right side
    11,804.20x = 86,427,348.38
  5. Step 5: Solve for x
    x = 86,427,348.38/11,804.20
  6. Step 6: Final answer
    x = 7,321.75

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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.