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Finding the Fourth Proportional to 17,912.60, 26,827.92 and 8,559.19

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Solution

The fourth proportional to 17,912.60, 26,827.92 and 8,559.19 is: 12,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,912.60 : 26,827.92 = 8,559.19 : x
  2. Step 2: Convert to fraction form
    17,912.60/26,827.92 = 8,559.19/x
  3. Step 3: Cross multiply
    17,912.60x = 26,827.92 × 8,559.19
  4. Step 4: Simplify right side
    17,912.60x = 229,625,198.95
  5. Step 5: Solve for x
    x = 229,625,198.95/17,912.60
  6. Step 6: Final answer
    x = 12,819.20

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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.