Home / 15,084.36-20,841.44-11,921.88

Finding the Fourth Proportional to 15,084.36, 20,841.44 and 11,921.88

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Solution

The fourth proportional to 15,084.36, 20,841.44 and 11,921.88 is: 16,471.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.36 : 20,841.44 = 11,921.88 : x
  2. Step 2: Convert to fraction form
    15,084.36/20,841.44 = 11,921.88/x
  3. Step 3: Cross multiply
    15,084.36x = 20,841.44 × 11,921.88
  4. Step 4: Simplify right side
    15,084.36x = 248,469,146.71
  5. Step 5: Solve for x
    x = 248,469,146.71/15,084.36
  6. Step 6: Final answer
    x = 16,471.97

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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.