Home / 20,662.54-31,002.57-11,291.61

Finding the Fourth Proportional to 20,662.54, 31,002.57 and 11,291.61

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Solution

The fourth proportional to 20,662.54, 31,002.57 and 11,291.61 is: 16,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.54 : 31,002.57 = 11,291.61 : x
  2. Step 2: Convert to fraction form
    20,662.54/31,002.57 = 11,291.61/x
  3. Step 3: Cross multiply
    20,662.54x = 31,002.57 × 11,291.61
  4. Step 4: Simplify right side
    20,662.54x = 350,068,929.44
  5. Step 5: Solve for x
    x = 350,068,929.44/20,662.54
  6. Step 6: Final answer
    x = 16,942.20

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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.