Home / 20,101.10-27,739.58-11,149.43

Finding the Fourth Proportional to 20,101.10, 27,739.58 and 11,149.43

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Solution

The fourth proportional to 20,101.10, 27,739.58 and 11,149.43 is: 15,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.10 : 27,739.58 = 11,149.43 : x
  2. Step 2: Convert to fraction form
    20,101.10/27,739.58 = 11,149.43/x
  3. Step 3: Cross multiply
    20,101.10x = 27,739.58 × 11,149.43
  4. Step 4: Simplify right side
    20,101.10x = 309,280,310.99
  5. Step 5: Solve for x
    x = 309,280,310.99/20,101.10
  6. Step 6: Final answer
    x = 15,386.24

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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.