Home / 28,821.20-43,236.26-12,181.29

Finding the Fourth Proportional to 28,821.20, 43,236.26 and 12,181.29

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Solution

The fourth proportional to 28,821.20, 43,236.26 and 12,181.29 is: 18,273.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.20 : 43,236.26 = 12,181.29 : x
  2. Step 2: Convert to fraction form
    28,821.20/43,236.26 = 12,181.29/x
  3. Step 3: Cross multiply
    28,821.20x = 43,236.26 × 12,181.29
  4. Step 4: Simplify right side
    28,821.20x = 526,673,360.67
  5. Step 5: Solve for x
    x = 526,673,360.67/28,821.20
  6. Step 6: Final answer
    x = 18,273.82

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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.