Home / 20,749.20-28,633.77-11,796.71

Finding the Fourth Proportional to 20,749.20, 28,633.77 and 11,796.71

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Solution

The fourth proportional to 20,749.20, 28,633.77 and 11,796.71 is: 16,279.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.20 : 28,633.77 = 11,796.71 : x
  2. Step 2: Convert to fraction form
    20,749.20/28,633.77 = 11,796.71/x
  3. Step 3: Cross multiply
    20,749.20x = 28,633.77 × 11,796.71
  4. Step 4: Simplify right side
    20,749.20x = 337,784,137.73
  5. Step 5: Solve for x
    x = 337,784,137.73/20,749.20
  6. Step 6: Final answer
    x = 16,279.38

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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.