Home / 26,648.91-39,979.49-9,118.71

Finding the Fourth Proportional to 26,648.91, 39,979.49 and 9,118.71

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Solution

The fourth proportional to 26,648.91, 39,979.49 and 9,118.71 is: 13,680.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,648.91 : 39,979.49 = 9,118.71 : x
  2. Step 2: Convert to fraction form
    26,648.91/39,979.49 = 9,118.71/x
  3. Step 3: Cross multiply
    26,648.91x = 39,979.49 × 9,118.71
  4. Step 4: Simplify right side
    26,648.91x = 364,561,329.66
  5. Step 5: Solve for x
    x = 364,561,329.66/26,648.91
  6. Step 6: Final answer
    x = 13,680.16

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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.