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Finding the Fourth Proportional to 17,912.28, 26,827.45 and 8,558.88

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Solution

The fourth proportional to 17,912.28, 26,827.45 and 8,558.88 is: 12,818.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,912.28 : 26,827.45 = 8,558.88 : x
  2. Step 2: Convert to fraction form
    17,912.28/26,827.45 = 8,558.88/x
  3. Step 3: Cross multiply
    17,912.28x = 26,827.45 × 8,558.88
  4. Step 4: Simplify right side
    17,912.28x = 229,612,803.26
  5. Step 5: Solve for x
    x = 229,612,803.26/17,912.28
  6. Step 6: Final answer
    x = 12,818.73

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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.