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Finding the Fourth Proportional to 18,672.42, 27,998.82 and 5,522.88

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Solution

The fourth proportional to 18,672.42, 27,998.82 and 5,522.88 is: 8,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.42 : 27,998.82 = 5,522.88 : x
  2. Step 2: Convert to fraction form
    18,672.42/27,998.82 = 5,522.88/x
  3. Step 3: Cross multiply
    18,672.42x = 27,998.82 × 5,522.88
  4. Step 4: Simplify right side
    18,672.42x = 154,634,123.00
  5. Step 5: Solve for x
    x = 154,634,123.00/18,672.42
  6. Step 6: Final answer
    x = 8,281.42

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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.