Home / 20,101.56-27,708.11-15,845.68

Finding the Fourth Proportional to 20,101.56, 27,708.11 and 15,845.68

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Solution

The fourth proportional to 20,101.56, 27,708.11 and 15,845.68 is: 21,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.56 : 27,708.11 = 15,845.68 : x
  2. Step 2: Convert to fraction form
    20,101.56/27,708.11 = 15,845.68/x
  3. Step 3: Cross multiply
    20,101.56x = 27,708.11 × 15,845.68
  4. Step 4: Simplify right side
    20,101.56x = 439,053,765.24
  5. Step 5: Solve for x
    x = 439,053,765.24/20,101.56
  6. Step 6: Final answer
    x = 21,841.78

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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.