Home / 20,165.32-27,828.25-12,205.55

Finding the Fourth Proportional to 20,165.32, 27,828.25 and 12,205.55

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Solution

The fourth proportional to 20,165.32, 27,828.25 and 12,205.55 is: 16,843.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.32 : 27,828.25 = 12,205.55 : x
  2. Step 2: Convert to fraction form
    20,165.32/27,828.25 = 12,205.55/x
  3. Step 3: Cross multiply
    20,165.32x = 27,828.25 × 12,205.55
  4. Step 4: Simplify right side
    20,165.32x = 339,659,096.79
  5. Step 5: Solve for x
    x = 339,659,096.79/20,165.32
  6. Step 6: Final answer
    x = 16,843.72

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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.