Home / 20,179.12-30,268.32-5,387.60

Finding the Fourth Proportional to 20,179.12, 30,268.32 and 5,387.60

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Solution

The fourth proportional to 20,179.12, 30,268.32 and 5,387.60 is: 8,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.12 : 30,268.32 = 5,387.60 : x
  2. Step 2: Convert to fraction form
    20,179.12/30,268.32 = 5,387.60/x
  3. Step 3: Cross multiply
    20,179.12x = 30,268.32 × 5,387.60
  4. Step 4: Simplify right side
    20,179.12x = 163,073,600.83
  5. Step 5: Solve for x
    x = 163,073,600.83/20,179.12
  6. Step 6: Final answer
    x = 8,081.30

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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.