Home / 12,744.66-19,116.84-3,979.64

Finding the Fourth Proportional to 12,744.66, 19,116.84 and 3,979.64

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Solution

The fourth proportional to 12,744.66, 19,116.84 and 3,979.64 is: 5,969.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,744.66 : 19,116.84 = 3,979.64 : x
  2. Step 2: Convert to fraction form
    12,744.66/19,116.84 = 3,979.64/x
  3. Step 3: Cross multiply
    12,744.66x = 19,116.84 × 3,979.64
  4. Step 4: Simplify right side
    12,744.66x = 76,078,141.14
  5. Step 5: Solve for x
    x = 76,078,141.14/12,744.66
  6. Step 6: Final answer
    x = 5,969.41

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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.