Home / 12,625.32-17,422.62-7,912.20

Finding the Fourth Proportional to 12,625.32, 17,422.62 and 7,912.20

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Solution

The fourth proportional to 12,625.32, 17,422.62 and 7,912.20 is: 10,918.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,625.32 : 17,422.62 = 7,912.20 : x
  2. Step 2: Convert to fraction form
    12,625.32/17,422.62 = 7,912.20/x
  3. Step 3: Cross multiply
    12,625.32x = 17,422.62 × 7,912.20
  4. Step 4: Simplify right side
    12,625.32x = 137,851,253.96
  5. Step 5: Solve for x
    x = 137,851,253.96/12,625.32
  6. Step 6: Final answer
    x = 10,918.63

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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.