Home / 13,912.30-20,843.79-11,558.53

Finding the Fourth Proportional to 13,912.30, 20,843.79 and 11,558.53

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Solution

The fourth proportional to 13,912.30, 20,843.79 and 11,558.53 is: 17,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.30 : 20,843.79 = 11,558.53 : x
  2. Step 2: Convert to fraction form
    13,912.30/20,843.79 = 11,558.53/x
  3. Step 3: Cross multiply
    13,912.30x = 20,843.79 × 11,558.53
  4. Step 4: Simplify right side
    13,912.30x = 240,923,572.03
  5. Step 5: Solve for x
    x = 240,923,572.03/13,912.30
  6. Step 6: Final answer
    x = 17,317.31

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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.