Home / 12,744.45-19,116.68-3,979.40

Finding the Fourth Proportional to 12,744.45, 19,116.68 and 3,979.40

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Solution

The fourth proportional to 12,744.45, 19,116.68 and 3,979.40 is: 5,969.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,744.45 : 19,116.68 = 3,979.40 : x
  2. Step 2: Convert to fraction form
    12,744.45/19,116.68 = 3,979.40/x
  3. Step 3: Cross multiply
    12,744.45x = 19,116.68 × 3,979.40
  4. Step 4: Simplify right side
    12,744.45x = 76,072,800.91
  5. Step 5: Solve for x
    x = 76,072,800.91/12,744.45
  6. Step 6: Final answer
    x = 5,969.09

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Similar ratio
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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.