Home / 20,742.22-28,620.50-11,664.96

Finding the Fourth Proportional to 20,742.22, 28,620.50 and 11,664.96

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Solution

The fourth proportional to 20,742.22, 28,620.50 and 11,664.96 is: 16,095.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.22 : 28,620.50 = 11,664.96 : x
  2. Step 2: Convert to fraction form
    20,742.22/28,620.50 = 11,664.96/x
  3. Step 3: Cross multiply
    20,742.22x = 28,620.50 × 11,664.96
  4. Step 4: Simplify right side
    20,742.22x = 333,856,987.68
  5. Step 5: Solve for x
    x = 333,856,987.68/20,742.22
  6. Step 6: Final answer
    x = 16,095.53

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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.