Home / 12,016.54-16,579.17-6,979.78

Finding the Fourth Proportional to 12,016.54, 16,579.17 and 6,979.78

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Solution

The fourth proportional to 12,016.54, 16,579.17 and 6,979.78 is: 9,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,016.54 : 16,579.17 = 6,979.78 : x
  2. Step 2: Convert to fraction form
    12,016.54/16,579.17 = 6,979.78/x
  3. Step 3: Cross multiply
    12,016.54x = 16,579.17 × 6,979.78
  4. Step 4: Simplify right side
    12,016.54x = 115,718,888.49
  5. Step 5: Solve for x
    x = 115,718,888.49/12,016.54
  6. Step 6: Final answer
    x = 9,629.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.