Home / 21,917.76-32,892.84-12,055.20

Finding the Fourth Proportional to 21,917.76, 32,892.84 and 12,055.20

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Solution

The fourth proportional to 21,917.76, 32,892.84 and 12,055.20 is: 18,091.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.76 : 32,892.84 = 12,055.20 : x
  2. Step 2: Convert to fraction form
    21,917.76/32,892.84 = 12,055.20/x
  3. Step 3: Cross multiply
    21,917.76x = 32,892.84 × 12,055.20
  4. Step 4: Simplify right side
    21,917.76x = 396,529,764.77
  5. Step 5: Solve for x
    x = 396,529,764.77/21,917.76
  6. Step 6: Final answer
    x = 18,091.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.