Home / 11,431.53-17,154.99-8,789.31

Finding the Fourth Proportional to 11,431.53, 17,154.99 and 8,789.31

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Solution

The fourth proportional to 11,431.53, 17,154.99 and 8,789.31 is: 13,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.53 : 17,154.99 = 8,789.31 : x
  2. Step 2: Convert to fraction form
    11,431.53/17,154.99 = 8,789.31/x
  3. Step 3: Cross multiply
    11,431.53x = 17,154.99 × 8,789.31
  4. Step 4: Simplify right side
    11,431.53x = 150,780,525.16
  5. Step 5: Solve for x
    x = 150,780,525.16/11,431.53
  6. Step 6: Final answer
    x = 13,189.88

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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.