Home / 20,170.28-27,835.89-11,672.80

Finding the Fourth Proportional to 20,170.28, 27,835.89 and 11,672.80

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Solution

The fourth proportional to 20,170.28, 27,835.89 and 11,672.80 is: 16,108.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.28 : 27,835.89 = 11,672.80 : x
  2. Step 2: Convert to fraction form
    20,170.28/27,835.89 = 11,672.80/x
  3. Step 3: Cross multiply
    20,170.28x = 27,835.89 × 11,672.80
  4. Step 4: Simplify right side
    20,170.28x = 324,922,840.77
  5. Step 5: Solve for x
    x = 324,922,840.77/20,170.28
  6. Step 6: Final answer
    x = 16,108.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.