Home / 20,103.77-27,743.37-11,151.85

Finding the Fourth Proportional to 20,103.77, 27,743.37 and 11,151.85

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Solution

The fourth proportional to 20,103.77, 27,743.37 and 11,151.85 is: 15,389.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.77 : 27,743.37 = 11,151.85 : x
  2. Step 2: Convert to fraction form
    20,103.77/27,743.37 = 11,151.85/x
  3. Step 3: Cross multiply
    20,103.77x = 27,743.37 × 11,151.85
  4. Step 4: Simplify right side
    20,103.77x = 309,389,900.73
  5. Step 5: Solve for x
    x = 309,389,900.73/20,103.77
  6. Step 6: Final answer
    x = 15,389.65

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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.