Home / 20,287.36-30,436.86-11,974.96

Finding the Fourth Proportional to 20,287.36, 30,436.86 and 11,974.96

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Solution

The fourth proportional to 20,287.36, 30,436.86 and 11,974.96 is: 17,965.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.36 : 30,436.86 = 11,974.96 : x
  2. Step 2: Convert to fraction form
    20,287.36/30,436.86 = 11,974.96/x
  3. Step 3: Cross multiply
    20,287.36x = 30,436.86 × 11,974.96
  4. Step 4: Simplify right side
    20,287.36x = 364,480,181.03
  5. Step 5: Solve for x
    x = 364,480,181.03/20,287.36
  6. Step 6: Final answer
    x = 17,965.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.