Home / 27,678.98-38,196.92-15,103.72

Finding the Fourth Proportional to 27,678.98, 38,196.92 and 15,103.72

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Solution

The fourth proportional to 27,678.98, 38,196.92 and 15,103.72 is: 20,843.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,678.98 : 38,196.92 = 15,103.72 : x
  2. Step 2: Convert to fraction form
    27,678.98/38,196.92 = 15,103.72/x
  3. Step 3: Cross multiply
    27,678.98x = 38,196.92 × 15,103.72
  4. Step 4: Simplify right side
    27,678.98x = 576,915,584.54
  5. Step 5: Solve for x
    x = 576,915,584.54/27,678.98
  6. Step 6: Final answer
    x = 20,843.09

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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.