Home / 12,467.40-18,694.62-7,775.88

Finding the Fourth Proportional to 12,467.40, 18,694.62 and 7,775.88

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Solution

The fourth proportional to 12,467.40, 18,694.62 and 7,775.88 is: 11,659.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,467.40 : 18,694.62 = 7,775.88 : x
  2. Step 2: Convert to fraction form
    12,467.40/18,694.62 = 7,775.88/x
  3. Step 3: Cross multiply
    12,467.40x = 18,694.62 × 7,775.88
  4. Step 4: Simplify right side
    12,467.40x = 145,367,121.77
  5. Step 5: Solve for x
    x = 145,367,121.77/12,467.40
  6. Step 6: Final answer
    x = 11,659.78

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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.