Home / 20,081.82-27,712.98-12,124.11

Finding the Fourth Proportional to 20,081.82, 27,712.98 and 12,124.11

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Solution

The fourth proportional to 20,081.82, 27,712.98 and 12,124.11 is: 16,731.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.82 : 27,712.98 = 12,124.11 : x
  2. Step 2: Convert to fraction form
    20,081.82/27,712.98 = 12,124.11/x
  3. Step 3: Cross multiply
    20,081.82x = 27,712.98 × 12,124.11
  4. Step 4: Simplify right side
    20,081.82x = 335,995,217.95
  5. Step 5: Solve for x
    x = 335,995,217.95/20,081.82
  6. Step 6: Final answer
    x = 16,731.31

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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.