Home / 12,772.20-17,618.46-7,995.36

Finding the Fourth Proportional to 12,772.20, 17,618.46 and 7,995.36

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Solution

The fourth proportional to 12,772.20, 17,618.46 and 7,995.36 is: 11,029.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.20 : 17,618.46 = 7,995.36 : x
  2. Step 2: Convert to fraction form
    12,772.20/17,618.46 = 7,995.36/x
  3. Step 3: Cross multiply
    12,772.20x = 17,618.46 × 7,995.36
  4. Step 4: Simplify right side
    12,772.20x = 140,865,930.35
  5. Step 5: Solve for x
    x = 140,865,930.35/12,772.20
  6. Step 6: Final answer
    x = 11,029.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.