Home / 20,213.60-27,891.06-11,260.88

Finding the Fourth Proportional to 20,213.60, 27,891.06 and 11,260.88

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Solution

The fourth proportional to 20,213.60, 27,891.06 and 11,260.88 is: 15,537.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.60 : 27,891.06 = 11,260.88 : x
  2. Step 2: Convert to fraction form
    20,213.60/27,891.06 = 11,260.88/x
  3. Step 3: Cross multiply
    20,213.60x = 27,891.06 × 11,260.88
  4. Step 4: Simplify right side
    20,213.60x = 314,077,879.73
  5. Step 5: Solve for x
    x = 314,077,879.73/20,213.60
  6. Step 6: Final answer
    x = 15,537.95

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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.