Home / 11,878.12-17,811.91-6,330.43

Finding the Fourth Proportional to 11,878.12, 17,811.91 and 6,330.43

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Solution

The fourth proportional to 11,878.12, 17,811.91 and 6,330.43 is: 9,492.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.12 : 17,811.91 = 6,330.43 : x
  2. Step 2: Convert to fraction form
    11,878.12/17,811.91 = 6,330.43/x
  3. Step 3: Cross multiply
    11,878.12x = 17,811.91 × 6,330.43
  4. Step 4: Simplify right side
    11,878.12x = 112,757,049.42
  5. Step 5: Solve for x
    x = 112,757,049.42/11,878.12
  6. Step 6: Final answer
    x = 9,492.84

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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.