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Finding the Fourth Proportional to 11,679.67, 17,522.55 and 3,888.55

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Solution

The fourth proportional to 11,679.67, 17,522.55 and 3,888.55 is: 5,833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.67 : 17,522.55 = 3,888.55 : x
  2. Step 2: Convert to fraction form
    11,679.67/17,522.55 = 3,888.55/x
  3. Step 3: Cross multiply
    11,679.67x = 17,522.55 × 3,888.55
  4. Step 4: Simplify right side
    11,679.67x = 68,137,311.80
  5. Step 5: Solve for x
    x = 68,137,311.80/11,679.67
  6. Step 6: Final answer
    x = 5,833.84

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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.