Home / 27,861.80-38,449.38-15,286.76

Finding the Fourth Proportional to 27,861.80, 38,449.38 and 15,286.76

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Solution

The fourth proportional to 27,861.80, 38,449.38 and 15,286.76 is: 21,095.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,861.80 : 38,449.38 = 15,286.76 : x
  2. Step 2: Convert to fraction form
    27,861.80/38,449.38 = 15,286.76/x
  3. Step 3: Cross multiply
    27,861.80x = 38,449.38 × 15,286.76
  4. Step 4: Simplify right side
    27,861.80x = 587,766,444.21
  5. Step 5: Solve for x
    x = 587,766,444.21/27,861.80
  6. Step 6: Final answer
    x = 21,095.78

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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.