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Finding the Fourth Proportional to 17,611.21, 26,402.99 and 8,729.64

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Solution

The fourth proportional to 17,611.21, 26,402.99 and 8,729.64 is: 13,087.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611.21 : 26,402.99 = 8,729.64 : x
  2. Step 2: Convert to fraction form
    17,611.21/26,402.99 = 8,729.64/x
  3. Step 3: Cross multiply
    17,611.21x = 26,402.99 × 8,729.64
  4. Step 4: Simplify right side
    17,611.21x = 230,488,597.62
  5. Step 5: Solve for x
    x = 230,488,597.62/17,611.21
  6. Step 6: Final answer
    x = 13,087.61

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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.