Home / 20,181.15-30,236.49-13,149.95

Finding the Fourth Proportional to 20,181.15, 30,236.49 and 13,149.95

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Solution

The fourth proportional to 20,181.15, 30,236.49 and 13,149.95 is: 19,701.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.15 : 30,236.49 = 13,149.95 : x
  2. Step 2: Convert to fraction form
    20,181.15/30,236.49 = 13,149.95/x
  3. Step 3: Cross multiply
    20,181.15x = 30,236.49 × 13,149.95
  4. Step 4: Simplify right side
    20,181.15x = 397,608,180.49
  5. Step 5: Solve for x
    x = 397,608,180.49/20,181.15
  6. Step 6: Final answer
    x = 19,701.96

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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.