Home / 20,135.67-27,786.30-11,183.76

Finding the Fourth Proportional to 20,135.67, 27,786.30 and 11,183.76

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Solution

The fourth proportional to 20,135.67, 27,786.30 and 11,183.76 is: 15,433.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.67 : 27,786.30 = 11,183.76 : x
  2. Step 2: Convert to fraction form
    20,135.67/27,786.30 = 11,183.76/x
  3. Step 3: Cross multiply
    20,135.67x = 27,786.30 × 11,183.76
  4. Step 4: Simplify right side
    20,135.67x = 310,755,310.49
  5. Step 5: Solve for x
    x = 310,755,310.49/20,135.67
  6. Step 6: Final answer
    x = 15,433.08

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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.