Home / 12,979.28-19,467.06-7,414.58

Finding the Fourth Proportional to 12,979.28, 19,467.06 and 7,414.58

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Solution

The fourth proportional to 12,979.28, 19,467.06 and 7,414.58 is: 11,120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.28 : 19,467.06 = 7,414.58 : x
  2. Step 2: Convert to fraction form
    12,979.28/19,467.06 = 7,414.58/x
  3. Step 3: Cross multiply
    12,979.28x = 19,467.06 × 7,414.58
  4. Step 4: Simplify right side
    12,979.28x = 144,340,073.73
  5. Step 5: Solve for x
    x = 144,340,073.73/12,979.28
  6. Step 6: Final answer
    x = 11,120.81

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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.