Home / 11,418.12-17,128.26-4,491

Finding the Fourth Proportional to 11,418.12, 17,128.26 and 4,491

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Solution

The fourth proportional to 11,418.12, 17,128.26 and 4,491 is: 6,736.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,418.12 : 17,128.26 = 4,491 : x
  2. Step 2: Convert to fraction form
    11,418.12/17,128.26 = 4,491/x
  3. Step 3: Cross multiply
    11,418.12x = 17,128.26 × 4,491
  4. Step 4: Simplify right side
    11,418.12x = 76,923,015.66
  5. Step 5: Solve for x
    x = 76,923,015.66/11,418.12
  6. Step 6: Final answer
    x = 6,736.92

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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.