Home / 12,940.82-19,415.33-4,620.65

Finding the Fourth Proportional to 12,940.82, 19,415.33 and 4,620.65

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Solution

The fourth proportional to 12,940.82, 19,415.33 and 4,620.65 is: 6,932.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.82 : 19,415.33 = 4,620.65 : x
  2. Step 2: Convert to fraction form
    12,940.82/19,415.33 = 4,620.65/x
  3. Step 3: Cross multiply
    12,940.82x = 19,415.33 × 4,620.65
  4. Step 4: Simplify right side
    12,940.82x = 89,711,504.65
  5. Step 5: Solve for x
    x = 89,711,504.65/12,940.82
  6. Step 6: Final answer
    x = 6,932.44

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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.