Home / 28,820.45-43,235.13-12,180.54

Finding the Fourth Proportional to 28,820.45, 43,235.13 and 12,180.54

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Solution

The fourth proportional to 28,820.45, 43,235.13 and 12,180.54 is: 18,272.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.45 : 43,235.13 = 12,180.54 : x
  2. Step 2: Convert to fraction form
    28,820.45/43,235.13 = 12,180.54/x
  3. Step 3: Cross multiply
    28,820.45x = 43,235.13 × 12,180.54
  4. Step 4: Simplify right side
    28,820.45x = 526,627,230.37
  5. Step 5: Solve for x
    x = 526,627,230.37/28,820.45
  6. Step 6: Final answer
    x = 18,272.70

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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.