Home / 84,011.82-126,016.13-20,832.12

Finding the Fourth Proportional to 84,011.82, 126,016.13 and 20,832.12

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Solution

The fourth proportional to 84,011.82, 126,016.13 and 20,832.12 is: 31,247.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,011.82 : 126,016.13 = 20,832.12 : x
  2. Step 2: Convert to fraction form
    84,011.82/126,016.13 = 20,832.12/x
  3. Step 3: Cross multiply
    84,011.82x = 126,016.13 × 20,832.12
  4. Step 4: Simplify right side
    84,011.82x = 2,625,183,037.94
  5. Step 5: Solve for x
    x = 2,625,183,037.94/84,011.82
  6. Step 6: Final answer
    x = 31,247.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.