Home / 20,198.79-27,874.26-11,246.40

Finding the Fourth Proportional to 20,198.79, 27,874.26 and 11,246.40

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Solution

The fourth proportional to 20,198.79, 27,874.26 and 11,246.40 is: 15,519.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.79 : 27,874.26 = 11,246.40 : x
  2. Step 2: Convert to fraction form
    20,198.79/27,874.26 = 11,246.40/x
  3. Step 3: Cross multiply
    20,198.79x = 27,874.26 × 11,246.40
  4. Step 4: Simplify right side
    20,198.79x = 313,485,077.66
  5. Step 5: Solve for x
    x = 313,485,077.66/20,198.79
  6. Step 6: Final answer
    x = 15,519.99

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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.