Home / 20,100.30-27,738.15-11,147.82

Finding the Fourth Proportional to 20,100.30, 27,738.15 and 11,147.82

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Solution

The fourth proportional to 20,100.30, 27,738.15 and 11,147.82 is: 15,383.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.30 : 27,738.15 = 11,147.82 : x
  2. Step 2: Convert to fraction form
    20,100.30/27,738.15 = 11,147.82/x
  3. Step 3: Cross multiply
    20,100.30x = 27,738.15 × 11,147.82
  4. Step 4: Simplify right side
    20,100.30x = 309,219,903.33
  5. Step 5: Solve for x
    x = 309,219,903.33/20,100.30
  6. Step 6: Final answer
    x = 15,383.85

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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.