Home / 11,679.12-17,518.62-3,887.91

Finding the Fourth Proportional to 11,679.12, 17,518.62 and 3,887.91

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Solution

The fourth proportional to 11,679.12, 17,518.62 and 3,887.91 is: 5,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.12 : 17,518.62 = 3,887.91 : x
  2. Step 2: Convert to fraction form
    11,679.12/17,518.62 = 3,887.91/x
  3. Step 3: Cross multiply
    11,679.12x = 17,518.62 × 3,887.91
  4. Step 4: Simplify right side
    11,679.12x = 68,110,817.88
  5. Step 5: Solve for x
    x = 68,110,817.88/11,679.12
  6. Step 6: Final answer
    x = 5,831.85

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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.