Home / 20,102.20-27,739.98-11,149

Finding the Fourth Proportional to 20,102.20, 27,739.98 and 11,149

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Solution

The fourth proportional to 20,102.20, 27,739.98 and 11,149 is: 15,385.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.20 : 27,739.98 = 11,149 : x
  2. Step 2: Convert to fraction form
    20,102.20/27,739.98 = 11,149/x
  3. Step 3: Cross multiply
    20,102.20x = 27,739.98 × 11,149
  4. Step 4: Simplify right side
    20,102.20x = 309,273,037.02
  5. Step 5: Solve for x
    x = 309,273,037.02/20,102.20
  6. Step 6: Final answer
    x = 15,385.03

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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.