Home / 20,788.36-28,680.82-11,833.61

Finding the Fourth Proportional to 20,788.36, 28,680.82 and 11,833.61

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Solution

The fourth proportional to 20,788.36, 28,680.82 and 11,833.61 is: 16,326.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.36 : 28,680.82 = 11,833.61 : x
  2. Step 2: Convert to fraction form
    20,788.36/28,680.82 = 11,833.61/x
  3. Step 3: Cross multiply
    20,788.36x = 28,680.82 × 11,833.61
  4. Step 4: Simplify right side
    20,788.36x = 339,397,465.37
  5. Step 5: Solve for x
    x = 339,397,465.37/20,788.36
  6. Step 6: Final answer
    x = 16,326.32

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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.