Home / 19,940.90-29,902.16-6,789.74

Finding the Fourth Proportional to 19,940.90, 29,902.16 and 6,789.74

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Solution

The fourth proportional to 19,940.90, 29,902.16 and 6,789.74 is: 10,181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.90 : 29,902.16 = 6,789.74 : x
  2. Step 2: Convert to fraction form
    19,940.90/29,902.16 = 6,789.74/x
  3. Step 3: Cross multiply
    19,940.90x = 29,902.16 × 6,789.74
  4. Step 4: Simplify right side
    19,940.90x = 203,027,759.30
  5. Step 5: Solve for x
    x = 203,027,759.30/19,940.90
  6. Step 6: Final answer
    x = 10,181.48

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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.