Home / 20,217.30-27,896.55-11,262.78

Finding the Fourth Proportional to 20,217.30, 27,896.55 and 11,262.78

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Solution

The fourth proportional to 20,217.30, 27,896.55 and 11,262.78 is: 15,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.30 : 27,896.55 = 11,262.78 : x
  2. Step 2: Convert to fraction form
    20,217.30/27,896.55 = 11,262.78/x
  3. Step 3: Cross multiply
    20,217.30x = 27,896.55 × 11,262.78
  4. Step 4: Simplify right side
    20,217.30x = 314,192,705.41
  5. Step 5: Solve for x
    x = 314,192,705.41/20,217.30
  6. Step 6: Final answer
    x = 15,540.78

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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.