Home / 20,212.28-27,888.30-12,252.86

Finding the Fourth Proportional to 20,212.28, 27,888.30 and 12,252.86

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Solution

The fourth proportional to 20,212.28, 27,888.30 and 12,252.86 is: 16,906.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.28 : 27,888.30 = 12,252.86 : x
  2. Step 2: Convert to fraction form
    20,212.28/27,888.30 = 12,252.86/x
  3. Step 3: Cross multiply
    20,212.28x = 27,888.30 × 12,252.86
  4. Step 4: Simplify right side
    20,212.28x = 341,711,435.54
  5. Step 5: Solve for x
    x = 341,711,435.54/20,212.28
  6. Step 6: Final answer
    x = 16,906.13

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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.