Home / 20,168.28-27,812.92-12,100.68

Finding the Fourth Proportional to 20,168.28, 27,812.92 and 12,100.68

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Solution

The fourth proportional to 20,168.28, 27,812.92 and 12,100.68 is: 16,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.28 : 27,812.92 = 12,100.68 : x
  2. Step 2: Convert to fraction form
    20,168.28/27,812.92 = 12,100.68/x
  3. Step 3: Cross multiply
    20,168.28x = 27,812.92 × 12,100.68
  4. Step 4: Simplify right side
    20,168.28x = 336,555,244.79
  5. Step 5: Solve for x
    x = 336,555,244.79/20,168.28
  6. Step 6: Final answer
    x = 16,687.35

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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.