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Finding the Fourth Proportional to 12,676.88, 19,014.79 and 3,316.75

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Solution

The fourth proportional to 12,676.88, 19,014.79 and 3,316.75 is: 4,974.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676.88 : 19,014.79 = 3,316.75 : x
  2. Step 2: Convert to fraction form
    12,676.88/19,014.79 = 3,316.75/x
  3. Step 3: Cross multiply
    12,676.88x = 19,014.79 × 3,316.75
  4. Step 4: Simplify right side
    12,676.88x = 63,067,304.73
  5. Step 5: Solve for x
    x = 63,067,304.73/12,676.88
  6. Step 6: Final answer
    x = 4,974.99

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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.