Home / 13,961.90-20,940.45-5,192.30

Finding the Fourth Proportional to 13,961.90, 20,940.45 and 5,192.30

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Solution

The fourth proportional to 13,961.90, 20,940.45 and 5,192.30 is: 7,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.90 : 20,940.45 = 5,192.30 : x
  2. Step 2: Convert to fraction form
    13,961.90/20,940.45 = 5,192.30/x
  3. Step 3: Cross multiply
    13,961.90x = 20,940.45 × 5,192.30
  4. Step 4: Simplify right side
    13,961.90x = 108,729,098.54
  5. Step 5: Solve for x
    x = 108,729,098.54/13,961.90
  6. Step 6: Final answer
    x = 7,787.56

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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.