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Finding the Fourth Proportional to 17,311.91, 25,991.90 and 8,884.40

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Solution

The fourth proportional to 17,311.91, 25,991.90 and 8,884.40 is: 13,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,311.91 : 25,991.90 = 8,884.40 : x
  2. Step 2: Convert to fraction form
    17,311.91/25,991.90 = 8,884.40/x
  3. Step 3: Cross multiply
    17,311.91x = 25,991.90 × 8,884.40
  4. Step 4: Simplify right side
    17,311.91x = 230,922,391.94
  5. Step 5: Solve for x
    x = 230,922,391.94/17,311.91
  6. Step 6: Final answer
    x = 13,338.93

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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.