Home / 20,205.38-27,906.76-13,479.32

Finding the Fourth Proportional to 20,205.38, 27,906.76 and 13,479.32

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Solution

The fourth proportional to 20,205.38, 27,906.76 and 13,479.32 is: 18,617.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.38 : 27,906.76 = 13,479.32 : x
  2. Step 2: Convert to fraction form
    20,205.38/27,906.76 = 13,479.32/x
  3. Step 3: Cross multiply
    20,205.38x = 27,906.76 × 13,479.32
  4. Step 4: Simplify right side
    20,205.38x = 376,164,148.20
  5. Step 5: Solve for x
    x = 376,164,148.20/20,205.38
  6. Step 6: Final answer
    x = 18,617.03

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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.