Home / 28,820.20-43,234.77-12,180.30

Finding the Fourth Proportional to 28,820.20, 43,234.77 and 12,180.30

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Solution

The fourth proportional to 28,820.20, 43,234.77 and 12,180.30 is: 18,272.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.20 : 43,234.77 = 12,180.30 : x
  2. Step 2: Convert to fraction form
    28,820.20/43,234.77 = 12,180.30/x
  3. Step 3: Cross multiply
    28,820.20x = 43,234.77 × 12,180.30
  4. Step 4: Simplify right side
    28,820.20x = 526,612,408.13
  5. Step 5: Solve for x
    x = 526,612,408.13/28,820.20
  6. Step 6: Final answer
    x = 18,272.34

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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.