Home / 19,282.20-28,874.70-12,672.60

Finding the Fourth Proportional to 19,282.20, 28,874.70 and 12,672.60

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Solution

The fourth proportional to 19,282.20, 28,874.70 and 12,672.60 is: 18,976.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,282.20 : 28,874.70 = 12,672.60 : x
  2. Step 2: Convert to fraction form
    19,282.20/28,874.70 = 12,672.60/x
  3. Step 3: Cross multiply
    19,282.20x = 28,874.70 × 12,672.60
  4. Step 4: Simplify right side
    19,282.20x = 365,917,523.22
  5. Step 5: Solve for x
    x = 365,917,523.22/19,282.20
  6. Step 6: Final answer
    x = 18,976.96

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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.