Home / 20,662.66-28,514.36-11,711.86

Finding the Fourth Proportional to 20,662.66, 28,514.36 and 11,711.86

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Solution

The fourth proportional to 20,662.66, 28,514.36 and 11,711.86 is: 16,162.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.66 : 28,514.36 = 11,711.86 : x
  2. Step 2: Convert to fraction form
    20,662.66/28,514.36 = 11,711.86/x
  3. Step 3: Cross multiply
    20,662.66x = 28,514.36 × 11,711.86
  4. Step 4: Simplify right side
    20,662.66x = 333,956,150.30
  5. Step 5: Solve for x
    x = 333,956,150.30/20,662.66
  6. Step 6: Final answer
    x = 16,162.30

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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.