Home / 27,982.86-38,621.17-17,910.78

Finding the Fourth Proportional to 27,982.86, 38,621.17 and 17,910.78

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Solution

The fourth proportional to 27,982.86, 38,621.17 and 17,910.78 is: 24,719.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,982.86 : 38,621.17 = 17,910.78 : x
  2. Step 2: Convert to fraction form
    27,982.86/38,621.17 = 17,910.78/x
  3. Step 3: Cross multiply
    27,982.86x = 38,621.17 × 17,910.78
  4. Step 4: Simplify right side
    27,982.86x = 691,735,279.21
  5. Step 5: Solve for x
    x = 691,735,279.21/27,982.86
  6. Step 6: Final answer
    x = 24,719.96

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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.