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Finding the Fourth Proportional to 17,811.56, 26,725.10 and 8,458.20

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Solution

The fourth proportional to 17,811.56, 26,725.10 and 8,458.20 is: 12,690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,811.56 : 26,725.10 = 8,458.20 : x
  2. Step 2: Convert to fraction form
    17,811.56/26,725.10 = 8,458.20/x
  3. Step 3: Cross multiply
    17,811.56x = 26,725.10 × 8,458.20
  4. Step 4: Simplify right side
    17,811.56x = 226,046,198.53
  5. Step 5: Solve for x
    x = 226,046,198.53/17,811.56
  6. Step 6: Final answer
    x = 12,690.98

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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.