Home / 20,189.43-30,272.54-8,329.28

Finding the Fourth Proportional to 20,189.43, 30,272.54 and 8,329.28

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Solution

The fourth proportional to 20,189.43, 30,272.54 and 8,329.28 is: 12,489.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.43 : 30,272.54 = 8,329.28 : x
  2. Step 2: Convert to fraction form
    20,189.43/30,272.54 = 8,329.28/x
  3. Step 3: Cross multiply
    20,189.43x = 30,272.54 × 8,329.28
  4. Step 4: Simplify right side
    20,189.43x = 252,148,268.96
  5. Step 5: Solve for x
    x = 252,148,268.96/20,189.43
  6. Step 6: Final answer
    x = 12,489.12

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1.5x scale

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.