Home / 13,998.24-20,986.02-5,231.88

Finding the Fourth Proportional to 13,998.24, 20,986.02 and 5,231.88

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Solution

The fourth proportional to 13,998.24, 20,986.02 and 5,231.88 is: 7,843.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.24 : 20,986.02 = 5,231.88 : x
  2. Step 2: Convert to fraction form
    13,998.24/20,986.02 = 5,231.88/x
  3. Step 3: Cross multiply
    13,998.24x = 20,986.02 × 5,231.88
  4. Step 4: Simplify right side
    13,998.24x = 109,796,338.32
  5. Step 5: Solve for x
    x = 109,796,338.32/13,998.24
  6. Step 6: Final answer
    x = 7,843.58

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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.