Home / 20,770.83-28,664.51-11,819.07

Finding the Fourth Proportional to 20,770.83, 28,664.51 and 11,819.07

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Solution

The fourth proportional to 20,770.83, 28,664.51 and 11,819.07 is: 16,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.83 : 28,664.51 = 11,819.07 : x
  2. Step 2: Convert to fraction form
    20,770.83/28,664.51 = 11,819.07/x
  3. Step 3: Cross multiply
    20,770.83x = 28,664.51 × 11,819.07
  4. Step 4: Simplify right side
    20,770.83x = 338,787,791.11
  5. Step 5: Solve for x
    x = 338,787,791.11/20,770.83
  6. Step 6: Final answer
    x = 16,310.75

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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.