Home / 20,451.18-28,222.89-11,498.16

Finding the Fourth Proportional to 20,451.18, 28,222.89 and 11,498.16

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Solution

The fourth proportional to 20,451.18, 28,222.89 and 11,498.16 is: 15,867.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.18 : 28,222.89 = 11,498.16 : x
  2. Step 2: Convert to fraction form
    20,451.18/28,222.89 = 11,498.16/x
  3. Step 3: Cross multiply
    20,451.18x = 28,222.89 × 11,498.16
  4. Step 4: Simplify right side
    20,451.18x = 324,511,304.88
  5. Step 5: Solve for x
    x = 324,511,304.88/20,451.18
  6. Step 6: Final answer
    x = 15,867.61

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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.