Home / 11,918.54-17,872.12-4,416.95

Finding the Fourth Proportional to 11,918.54, 17,872.12 and 4,416.95

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Solution

The fourth proportional to 11,918.54, 17,872.12 and 4,416.95 is: 6,623.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.54 : 17,872.12 = 4,416.95 : x
  2. Step 2: Convert to fraction form
    11,918.54/17,872.12 = 4,416.95/x
  3. Step 3: Cross multiply
    11,918.54x = 17,872.12 × 4,416.95
  4. Step 4: Simplify right side
    11,918.54x = 78,940,260.43
  5. Step 5: Solve for x
    x = 78,940,260.43/11,918.54
  6. Step 6: Final answer
    x = 6,623.32

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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.