Home / 20,181.20-30,284.55-7,702.56

Finding the Fourth Proportional to 20,181.20, 30,284.55 and 7,702.56

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Solution

The fourth proportional to 20,181.20, 30,284.55 and 7,702.56 is: 11,558.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.20 : 30,284.55 = 7,702.56 : x
  2. Step 2: Convert to fraction form
    20,181.20/30,284.55 = 7,702.56/x
  3. Step 3: Cross multiply
    20,181.20x = 30,284.55 × 7,702.56
  4. Step 4: Simplify right side
    20,181.20x = 233,268,563.45
  5. Step 5: Solve for x
    x = 233,268,563.45/20,181.20
  6. Step 6: Final answer
    x = 11,558.71

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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.