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Finding the Fourth Proportional to 18,794.88, 28,188 and 6,312.96

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Solution

The fourth proportional to 18,794.88, 28,188 and 6,312.96 is: 9,467.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.88 : 28,188 = 6,312.96 : x
  2. Step 2: Convert to fraction form
    18,794.88/28,188 = 6,312.96/x
  3. Step 3: Cross multiply
    18,794.88x = 28,188 × 6,312.96
  4. Step 4: Simplify right side
    18,794.88x = 177,949,716.48
  5. Step 5: Solve for x
    x = 177,949,716.48/18,794.88
  6. Step 6: Final answer
    x = 9,467.99

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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.