Home / 11,918.66-17,879.40-3,153.65

Finding the Fourth Proportional to 11,918.66, 17,879.40 and 3,153.65

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Solution

The fourth proportional to 11,918.66, 17,879.40 and 3,153.65 is: 4,730.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.66 : 17,879.40 = 3,153.65 : x
  2. Step 2: Convert to fraction form
    11,918.66/17,879.40 = 3,153.65/x
  3. Step 3: Cross multiply
    11,918.66x = 17,879.40 × 3,153.65
  4. Step 4: Simplify right side
    11,918.66x = 56,385,280.41
  5. Step 5: Solve for x
    x = 56,385,280.41/11,918.66
  6. Step 6: Final answer
    x = 4,730.84

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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.