Home / 27,760.18-38,310.13-15,185.78

Finding the Fourth Proportional to 27,760.18, 38,310.13 and 15,185.78

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Solution

The fourth proportional to 27,760.18, 38,310.13 and 15,185.78 is: 20,956.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,760.18 : 38,310.13 = 15,185.78 : x
  2. Step 2: Convert to fraction form
    27,760.18/38,310.13 = 15,185.78/x
  3. Step 3: Cross multiply
    27,760.18x = 38,310.13 × 15,185.78
  4. Step 4: Simplify right side
    27,760.18x = 581,769,205.95
  5. Step 5: Solve for x
    x = 581,769,205.95/27,760.18
  6. Step 6: Final answer
    x = 20,956.97

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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.