Home / 12,728.88-19,043.64-11,251.44

Finding the Fourth Proportional to 12,728.88, 19,043.64 and 11,251.44

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Solution

The fourth proportional to 12,728.88, 19,043.64 and 11,251.44 is: 16,833.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.88 : 19,043.64 = 11,251.44 : x
  2. Step 2: Convert to fraction form
    12,728.88/19,043.64 = 11,251.44/x
  3. Step 3: Cross multiply
    12,728.88x = 19,043.64 × 11,251.44
  4. Step 4: Simplify right side
    12,728.88x = 214,268,372.84
  5. Step 5: Solve for x
    x = 214,268,372.84/12,728.88
  6. Step 6: Final answer
    x = 16,833.25

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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.