Home / 14,388.30-21,562.20-11,431.80

Finding the Fourth Proportional to 14,388.30, 21,562.20 and 11,431.80

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Solution

The fourth proportional to 14,388.30, 21,562.20 and 11,431.80 is: 17,131.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,388.30 : 21,562.20 = 11,431.80 : x
  2. Step 2: Convert to fraction form
    14,388.30/21,562.20 = 11,431.80/x
  3. Step 3: Cross multiply
    14,388.30x = 21,562.20 × 11,431.80
  4. Step 4: Simplify right side
    14,388.30x = 246,494,757.96
  5. Step 5: Solve for x
    x = 246,494,757.96/14,388.30
  6. Step 6: Final answer
    x = 17,131.61

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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.