Home / 12,979.09-19,464.78-5,581.79

Finding the Fourth Proportional to 12,979.09, 19,464.78 and 5,581.79

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Solution

The fourth proportional to 12,979.09, 19,464.78 and 5,581.79 is: 8,371.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.09 : 19,464.78 = 5,581.79 : x
  2. Step 2: Convert to fraction form
    12,979.09/19,464.78 = 5,581.79/x
  3. Step 3: Cross multiply
    12,979.09x = 19,464.78 × 5,581.79
  4. Step 4: Simplify right side
    12,979.09x = 108,648,240.51
  5. Step 5: Solve for x
    x = 108,648,240.51/12,979.09
  6. Step 6: Final answer
    x = 8,371.02

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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.