Home / 20,883.96-28,845.18-15,209.73

Finding the Fourth Proportional to 20,883.96, 28,845.18 and 15,209.73

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Solution

The fourth proportional to 20,883.96, 28,845.18 and 15,209.73 is: 21,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.96 : 28,845.18 = 15,209.73 : x
  2. Step 2: Convert to fraction form
    20,883.96/28,845.18 = 15,209.73/x
  3. Step 3: Cross multiply
    20,883.96x = 28,845.18 × 15,209.73
  4. Step 4: Simplify right side
    20,883.96x = 438,727,399.60
  5. Step 5: Solve for x
    x = 438,727,399.60/20,883.96
  6. Step 6: Final answer
    x = 21,007.86

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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.