Home / 20,120.64-27,768.24-11,739.84

Finding the Fourth Proportional to 20,120.64, 27,768.24 and 11,739.84

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Solution

The fourth proportional to 20,120.64, 27,768.24 and 11,739.84 is: 16,202.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.64 : 27,768.24 = 11,739.84 : x
  2. Step 2: Convert to fraction form
    20,120.64/27,768.24 = 11,739.84/x
  3. Step 3: Cross multiply
    20,120.64x = 27,768.24 × 11,739.84
  4. Step 4: Simplify right side
    20,120.64x = 325,994,694.68
  5. Step 5: Solve for x
    x = 325,994,694.68/20,120.64
  6. Step 6: Final answer
    x = 16,202.00

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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.