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Finding the Fourth Proportional to 17,101.09, 25,660.52 and 12,939.86

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Solution

The fourth proportional to 17,101.09, 25,660.52 and 12,939.86 is: 19,416.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,101.09 : 25,660.52 = 12,939.86 : x
  2. Step 2: Convert to fraction form
    17,101.09/25,660.52 = 12,939.86/x
  3. Step 3: Cross multiply
    17,101.09x = 25,660.52 × 12,939.86
  4. Step 4: Simplify right side
    17,101.09x = 332,043,471.63
  5. Step 5: Solve for x
    x = 332,043,471.63/17,101.09
  6. Step 6: Final answer
    x = 19,416.51

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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.