Home / 12,964.80-19,440.72-4,198.80

Finding the Fourth Proportional to 12,964.80, 19,440.72 and 4,198.80

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Solution

The fourth proportional to 12,964.80, 19,440.72 and 4,198.80 is: 6,296.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,964.80 : 19,440.72 = 4,198.80 : x
  2. Step 2: Convert to fraction form
    12,964.80/19,440.72 = 4,198.80/x
  3. Step 3: Cross multiply
    12,964.80x = 19,440.72 × 4,198.80
  4. Step 4: Simplify right side
    12,964.80x = 81,627,695.14
  5. Step 5: Solve for x
    x = 81,627,695.14/12,964.80
  6. Step 6: Final answer
    x = 6,296.10

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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.