Home / 20,954.92-28,917.78-12,002.68

Finding the Fourth Proportional to 20,954.92, 28,917.78 and 12,002.68

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Solution

The fourth proportional to 20,954.92, 28,917.78 and 12,002.68 is: 16,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.92 : 28,917.78 = 12,002.68 : x
  2. Step 2: Convert to fraction form
    20,954.92/28,917.78 = 12,002.68/x
  3. Step 3: Cross multiply
    20,954.92x = 28,917.78 × 12,002.68
  4. Step 4: Simplify right side
    20,954.92x = 347,090,859.65
  5. Step 5: Solve for x
    x = 347,090,859.65/20,954.92
  6. Step 6: Final answer
    x = 16,563.69

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1.5x scale

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.