Home / 20,103.74-27,743.22-11,151.30

Finding the Fourth Proportional to 20,103.74, 27,743.22 and 11,151.30

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Solution

The fourth proportional to 20,103.74, 27,743.22 and 11,151.30 is: 15,388.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.74 : 27,743.22 = 11,151.30 : x
  2. Step 2: Convert to fraction form
    20,103.74/27,743.22 = 11,151.30/x
  3. Step 3: Cross multiply
    20,103.74x = 27,743.22 × 11,151.30
  4. Step 4: Simplify right side
    20,103.74x = 309,372,969.19
  5. Step 5: Solve for x
    x = 309,372,969.19/20,103.74
  6. Step 6: Final answer
    x = 15,388.83

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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.