Home / 13,959.20-20,936.88-5,198.24

Finding the Fourth Proportional to 13,959.20, 20,936.88 and 5,198.24

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Solution

The fourth proportional to 13,959.20, 20,936.88 and 5,198.24 is: 7,796.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.20 : 20,936.88 = 5,198.24 : x
  2. Step 2: Convert to fraction form
    13,959.20/20,936.88 = 5,198.24/x
  3. Step 3: Cross multiply
    13,959.20x = 20,936.88 × 5,198.24
  4. Step 4: Simplify right side
    13,959.20x = 108,834,927.09
  5. Step 5: Solve for x
    x = 108,834,927.09/13,959.20
  6. Step 6: Final answer
    x = 7,796.65

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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.