Home / 20,884.23-28,820.38-11,452.79

Finding the Fourth Proportional to 20,884.23, 28,820.38 and 11,452.79

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Solution

The fourth proportional to 20,884.23, 28,820.38 and 11,452.79 is: 15,804.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.23 : 28,820.38 = 11,452.79 : x
  2. Step 2: Convert to fraction form
    20,884.23/28,820.38 = 11,452.79/x
  3. Step 3: Cross multiply
    20,884.23x = 28,820.38 × 11,452.79
  4. Step 4: Simplify right side
    20,884.23x = 330,073,759.86
  5. Step 5: Solve for x
    x = 330,073,759.86/20,884.23
  6. Step 6: Final answer
    x = 15,804.93

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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.