Home / 20,664.54-31,005.57-11,293.61

Finding the Fourth Proportional to 20,664.54, 31,005.57 and 11,293.61

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Solution

The fourth proportional to 20,664.54, 31,005.57 and 11,293.61 is: 16,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.54 : 31,005.57 = 11,293.61 : x
  2. Step 2: Convert to fraction form
    20,664.54/31,005.57 = 11,293.61/x
  3. Step 3: Cross multiply
    20,664.54x = 31,005.57 × 11,293.61
  4. Step 4: Simplify right side
    20,664.54x = 350,164,815.41
  5. Step 5: Solve for x
    x = 350,164,815.41/20,664.54
  6. Step 6: Final answer
    x = 16,945.20

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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.