Home / 27,790.38-38,350.73-15,215.13

Finding the Fourth Proportional to 27,790.38, 38,350.73 and 15,215.13

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Solution

The fourth proportional to 27,790.38, 38,350.73 and 15,215.13 is: 20,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,790.38 : 38,350.73 = 15,215.13 : x
  2. Step 2: Convert to fraction form
    27,790.38/38,350.73 = 15,215.13/x
  3. Step 3: Cross multiply
    27,790.38x = 38,350.73 × 15,215.13
  4. Step 4: Simplify right side
    27,790.38x = 583,511,342.54
  5. Step 5: Solve for x
    x = 583,511,342.54/27,790.38
  6. Step 6: Final answer
    x = 20,996.88

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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.