Home / 43,949.88-65,929.62-12,790.20

Finding the Fourth Proportional to 43,949.88, 65,929.62 and 12,790.20

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Solution

The fourth proportional to 43,949.88, 65,929.62 and 12,790.20 is: 19,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,949.88 : 65,929.62 = 12,790.20 : x
  2. Step 2: Convert to fraction form
    43,949.88/65,929.62 = 12,790.20/x
  3. Step 3: Cross multiply
    43,949.88x = 65,929.62 × 12,790.20
  4. Step 4: Simplify right side
    43,949.88x = 843,253,025.72
  5. Step 5: Solve for x
    x = 843,253,025.72/43,949.88
  6. Step 6: Final answer
    x = 19,186.70

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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.