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Finding the Fourth Proportional to 17,611.72, 26,415.09 and 6,516.55

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Solution

The fourth proportional to 17,611.72, 26,415.09 and 6,516.55 is: 9,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611.72 : 26,415.09 = 6,516.55 : x
  2. Step 2: Convert to fraction form
    17,611.72/26,415.09 = 6,516.55/x
  3. Step 3: Cross multiply
    17,611.72x = 26,415.09 × 6,516.55
  4. Step 4: Simplify right side
    17,611.72x = 172,135,254.74
  5. Step 5: Solve for x
    x = 172,135,254.74/17,611.72
  6. Step 6: Final answer
    x = 9,773.90

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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.