Home / 19,728.02-27,221.05-11,229.64

Finding the Fourth Proportional to 19,728.02, 27,221.05 and 11,229.64

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Solution

The fourth proportional to 19,728.02, 27,221.05 and 11,229.64 is: 15,494.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.02 : 27,221.05 = 11,229.64 : x
  2. Step 2: Convert to fraction form
    19,728.02/27,221.05 = 11,229.64/x
  3. Step 3: Cross multiply
    19,728.02x = 27,221.05 × 11,229.64
  4. Step 4: Simplify right side
    19,728.02x = 305,682,591.92
  5. Step 5: Solve for x
    x = 305,682,591.92/19,728.02
  6. Step 6: Final answer
    x = 15,494.84

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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.