Home / 12,486.11-18,729.89-4,694.99

Finding the Fourth Proportional to 12,486.11, 18,729.89 and 4,694.99

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Solution

The fourth proportional to 12,486.11, 18,729.89 and 4,694.99 is: 7,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.11 : 18,729.89 = 4,694.99 : x
  2. Step 2: Convert to fraction form
    12,486.11/18,729.89 = 4,694.99/x
  3. Step 3: Cross multiply
    12,486.11x = 18,729.89 × 4,694.99
  4. Step 4: Simplify right side
    12,486.11x = 87,936,599.36
  5. Step 5: Solve for x
    x = 87,936,599.36/12,486.11
  6. Step 6: Final answer
    x = 7,042.75

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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.