Home / 27,911.76-38,486.82-21,523.92

Finding the Fourth Proportional to 27,911.76, 38,486.82 and 21,523.92

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Solution

The fourth proportional to 27,911.76, 38,486.82 and 21,523.92 is: 29,678.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,911.76 : 38,486.82 = 21,523.92 : x
  2. Step 2: Convert to fraction form
    27,911.76/38,486.82 = 21,523.92/x
  3. Step 3: Cross multiply
    27,911.76x = 38,486.82 × 21,523.92
  4. Step 4: Simplify right side
    27,911.76x = 828,387,234.73
  5. Step 5: Solve for x
    x = 828,387,234.73/27,911.76
  6. Step 6: Final answer
    x = 29,678.79

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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.