Home / 15,644.97-21,589.84-8,571.41

Finding the Fourth Proportional to 15,644.97, 21,589.84 and 8,571.41

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Solution

The fourth proportional to 15,644.97, 21,589.84 and 8,571.41 is: 11,828.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.97 : 21,589.84 = 8,571.41 : x
  2. Step 2: Convert to fraction form
    15,644.97/21,589.84 = 8,571.41/x
  3. Step 3: Cross multiply
    15,644.97x = 21,589.84 × 8,571.41
  4. Step 4: Simplify right side
    15,644.97x = 185,055,370.47
  5. Step 5: Solve for x
    x = 185,055,370.47/15,644.97
  6. Step 6: Final answer
    x = 11,828.43

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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.