Home / 20,771.93-28,665.54-11,819.48

Finding the Fourth Proportional to 20,771.93, 28,665.54 and 11,819.48

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Solution

The fourth proportional to 20,771.93, 28,665.54 and 11,819.48 is: 16,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.93 : 28,665.54 = 11,819.48 : x
  2. Step 2: Convert to fraction form
    20,771.93/28,665.54 = 11,819.48/x
  3. Step 3: Cross multiply
    20,771.93x = 28,665.54 × 11,819.48
  4. Step 4: Simplify right side
    20,771.93x = 338,811,633.39
  5. Step 5: Solve for x
    x = 338,811,633.39/20,771.93
  6. Step 6: Final answer
    x = 16,311.04

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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.