Home / 15,311.97-21,132.36-8,597.61

Finding the Fourth Proportional to 15,311.97, 21,132.36 and 8,597.61

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Solution

The fourth proportional to 15,311.97, 21,132.36 and 8,597.61 is: 11,865.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.97 : 21,132.36 = 8,597.61 : x
  2. Step 2: Convert to fraction form
    15,311.97/21,132.36 = 8,597.61/x
  3. Step 3: Cross multiply
    15,311.97x = 21,132.36 × 8,597.61
  4. Step 4: Simplify right side
    15,311.97x = 181,687,789.66
  5. Step 5: Solve for x
    x = 181,687,789.66/15,311.97
  6. Step 6: Final answer
    x = 11,865.74

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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.