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Finding the Fourth Proportional to 11,902.55, 17,855.01 and 4,408.11

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Solution

The fourth proportional to 11,902.55, 17,855.01 and 4,408.11 is: 6,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,902.55 : 17,855.01 = 4,408.11 : x
  2. Step 2: Convert to fraction form
    11,902.55/17,855.01 = 4,408.11/x
  3. Step 3: Cross multiply
    11,902.55x = 17,855.01 × 4,408.11
  4. Step 4: Simplify right side
    11,902.55x = 78,706,848.13
  5. Step 5: Solve for x
    x = 78,706,848.13/11,902.55
  6. Step 6: Final answer
    x = 6,612.61

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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.