Home / 27,622.97-38,120.79-15,687.41

Finding the Fourth Proportional to 27,622.97, 38,120.79 and 15,687.41

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Solution

The fourth proportional to 27,622.97, 38,120.79 and 15,687.41 is: 21,649.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,622.97 : 38,120.79 = 15,687.41 : x
  2. Step 2: Convert to fraction form
    27,622.97/38,120.79 = 15,687.41/x
  3. Step 3: Cross multiply
    27,622.97x = 38,120.79 × 15,687.41
  4. Step 4: Simplify right side
    27,622.97x = 598,016,271.65
  5. Step 5: Solve for x
    x = 598,016,271.65/27,622.97
  6. Step 6: Final answer
    x = 21,649.24

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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.