Home / 11,939.37-17,885.40-8,181.91

Finding the Fourth Proportional to 11,939.37, 17,885.40 and 8,181.91

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Solution

The fourth proportional to 11,939.37, 17,885.40 and 8,181.91 is: 12,256.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.37 : 17,885.40 = 8,181.91 : x
  2. Step 2: Convert to fraction form
    11,939.37/17,885.40 = 8,181.91/x
  3. Step 3: Cross multiply
    11,939.37x = 17,885.40 × 8,181.91
  4. Step 4: Simplify right side
    11,939.37x = 146,336,747.80
  5. Step 5: Solve for x
    x = 146,336,747.80/11,939.37
  6. Step 6: Final answer
    x = 12,256.66

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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.