Home / 20,135.88-27,813.66-15,326.60

Finding the Fourth Proportional to 20,135.88, 27,813.66 and 15,326.60

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Solution

The fourth proportional to 20,135.88, 27,813.66 and 15,326.60 is: 21,170.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.88 : 27,813.66 = 15,326.60 : x
  2. Step 2: Convert to fraction form
    20,135.88/27,813.66 = 15,326.60/x
  3. Step 3: Cross multiply
    20,135.88x = 27,813.66 × 15,326.60
  4. Step 4: Simplify right side
    20,135.88x = 426,288,841.36
  5. Step 5: Solve for x
    x = 426,288,841.36/20,135.88
  6. Step 6: Final answer
    x = 21,170.61

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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.