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Finding the Fourth Proportional to 11,600.88, 17,381.88 and 6,390.96

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Solution

The fourth proportional to 11,600.88, 17,381.88 and 6,390.96 is: 9,575.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,600.88 : 17,381.88 = 6,390.96 : x
  2. Step 2: Convert to fraction form
    11,600.88/17,381.88 = 6,390.96/x
  3. Step 3: Cross multiply
    11,600.88x = 17,381.88 × 6,390.96
  4. Step 4: Simplify right side
    11,600.88x = 111,086,899.80
  5. Step 5: Solve for x
    x = 111,086,899.80/11,600.88
  6. Step 6: Final answer
    x = 9,575.73

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1.5x scale

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.