Home / 27,979.76-38,610.68-15,404.24

Finding the Fourth Proportional to 27,979.76, 38,610.68 and 15,404.24

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Solution

The fourth proportional to 27,979.76, 38,610.68 and 15,404.24 is: 21,257.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.76 : 38,610.68 = 15,404.24 : x
  2. Step 2: Convert to fraction form
    27,979.76/38,610.68 = 15,404.24/x
  3. Step 3: Cross multiply
    27,979.76x = 38,610.68 × 15,404.24
  4. Step 4: Simplify right side
    27,979.76x = 594,768,181.28
  5. Step 5: Solve for x
    x = 594,768,181.28/27,979.76
  6. Step 6: Final answer
    x = 21,257.09

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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.