Home / 12,076.88-18,115.92-4,286.30

Finding the Fourth Proportional to 12,076.88, 18,115.92 and 4,286.30

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Solution

The fourth proportional to 12,076.88, 18,115.92 and 4,286.30 is: 6,429.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,076.88 : 18,115.92 = 4,286.30 : x
  2. Step 2: Convert to fraction form
    12,076.88/18,115.92 = 4,286.30/x
  3. Step 3: Cross multiply
    12,076.88x = 18,115.92 × 4,286.30
  4. Step 4: Simplify right side
    12,076.88x = 77,650,177.32
  5. Step 5: Solve for x
    x = 77,650,177.32/12,076.88
  6. Step 6: Final answer
    x = 6,429.66

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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.