Home / 15,716.22-21,688.80-8,546.61

Finding the Fourth Proportional to 15,716.22, 21,688.80 and 8,546.61

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Solution

The fourth proportional to 15,716.22, 21,688.80 and 8,546.61 is: 11,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,716.22 : 21,688.80 = 8,546.61 : x
  2. Step 2: Convert to fraction form
    15,716.22/21,688.80 = 8,546.61/x
  3. Step 3: Cross multiply
    15,716.22x = 21,688.80 × 8,546.61
  4. Step 4: Simplify right side
    15,716.22x = 185,365,714.97
  5. Step 5: Solve for x
    x = 185,365,714.97/15,716.22
  6. Step 6: Final answer
    x = 11,794.55

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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.