Home / 20,296.82-27,991.47-12,743.85

Finding the Fourth Proportional to 20,296.82, 27,991.47 and 12,743.85

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Solution

The fourth proportional to 20,296.82, 27,991.47 and 12,743.85 is: 17,575.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.82 : 27,991.47 = 12,743.85 : x
  2. Step 2: Convert to fraction form
    20,296.82/27,991.47 = 12,743.85/x
  3. Step 3: Cross multiply
    20,296.82x = 27,991.47 × 12,743.85
  4. Step 4: Simplify right side
    20,296.82x = 356,719,094.96
  5. Step 5: Solve for x
    x = 356,719,094.96/20,296.82
  6. Step 6: Final answer
    x = 17,575.12

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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.