Home / 20,556.60-30,785.18-11,764.86

Finding the Fourth Proportional to 20,556.60, 30,785.18 and 11,764.86

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Solution

The fourth proportional to 20,556.60, 30,785.18 and 11,764.86 is: 17,618.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.60 : 30,785.18 = 11,764.86 : x
  2. Step 2: Convert to fraction form
    20,556.60/30,785.18 = 11,764.86/x
  3. Step 3: Cross multiply
    20,556.60x = 30,785.18 × 11,764.86
  4. Step 4: Simplify right side
    20,556.60x = 362,183,332.77
  5. Step 5: Solve for x
    x = 362,183,332.77/20,556.60
  6. Step 6: Final answer
    x = 17,618.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.