Home / 27,981.80-41,979.96-10,451.78

Finding the Fourth Proportional to 27,981.80, 41,979.96 and 10,451.78

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Solution

The fourth proportional to 27,981.80, 41,979.96 and 10,451.78 is: 15,680.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.80 : 41,979.96 = 10,451.78 : x
  2. Step 2: Convert to fraction form
    27,981.80/41,979.96 = 10,451.78/x
  3. Step 3: Cross multiply
    27,981.80x = 41,979.96 × 10,451.78
  4. Step 4: Simplify right side
    27,981.80x = 438,765,306.33
  5. Step 5: Solve for x
    x = 438,765,306.33/27,981.80
  6. Step 6: Final answer
    x = 15,680.38

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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.