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Finding the Fourth Proportional to 11,876.88, 17,817.85 and 4,380.45

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Solution

The fourth proportional to 11,876.88, 17,817.85 and 4,380.45 is: 6,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,876.88 : 17,817.85 = 4,380.45 : x
  2. Step 2: Convert to fraction form
    11,876.88/17,817.85 = 4,380.45/x
  3. Step 3: Cross multiply
    11,876.88x = 17,817.85 × 4,380.45
  4. Step 4: Simplify right side
    11,876.88x = 78,050,201.03
  5. Step 5: Solve for x
    x = 78,050,201.03/11,876.88
  6. Step 6: Final answer
    x = 6,571.61

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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.