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Finding the Fourth Proportional to 17,991.48, 26,969.94 and 8,125.56

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Solution

The fourth proportional to 17,991.48, 26,969.94 and 8,125.56 is: 12,180.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.48 : 26,969.94 = 8,125.56 : x
  2. Step 2: Convert to fraction form
    17,991.48/26,969.94 = 8,125.56/x
  3. Step 3: Cross multiply
    17,991.48x = 26,969.94 × 8,125.56
  4. Step 4: Simplify right side
    17,991.48x = 219,145,865.67
  5. Step 5: Solve for x
    x = 219,145,865.67/17,991.48
  6. Step 6: Final answer
    x = 12,180.54

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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.