Home / 12,940.65-19,399.10-4,171.05

Finding the Fourth Proportional to 12,940.65, 19,399.10 and 4,171.05

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Solution

The fourth proportional to 12,940.65, 19,399.10 and 4,171.05 is: 6,252.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.65 : 19,399.10 = 4,171.05 : x
  2. Step 2: Convert to fraction form
    12,940.65/19,399.10 = 4,171.05/x
  3. Step 3: Cross multiply
    12,940.65x = 19,399.10 × 4,171.05
  4. Step 4: Simplify right side
    12,940.65x = 80,914,595.20
  5. Step 5: Solve for x
    x = 80,914,595.20/12,940.65
  6. Step 6: Final answer
    x = 6,252.75

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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.