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Finding the Fourth Proportional to 11,894.89, 17,869.68 and 8,392.97

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Solution

The fourth proportional to 11,894.89, 17,869.68 and 8,392.97 is: 12,608.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,894.89 : 17,869.68 = 8,392.97 : x
  2. Step 2: Convert to fraction form
    11,894.89/17,869.68 = 8,392.97/x
  3. Step 3: Cross multiply
    11,894.89x = 17,869.68 × 8,392.97
  4. Step 4: Simplify right side
    11,894.89x = 149,979,688.15
  5. Step 5: Solve for x
    x = 149,979,688.15/11,894.89
  6. Step 6: Final answer
    x = 12,608.75

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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.