Home / 12,405.26-17,121.94-7,625.18

Finding the Fourth Proportional to 12,405.26, 17,121.94 and 7,625.18

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Solution

The fourth proportional to 12,405.26, 17,121.94 and 7,625.18 is: 10,524.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.26 : 17,121.94 = 7,625.18 : x
  2. Step 2: Convert to fraction form
    12,405.26/17,121.94 = 7,625.18/x
  3. Step 3: Cross multiply
    12,405.26x = 17,121.94 × 7,625.18
  4. Step 4: Simplify right side
    12,405.26x = 130,557,874.45
  5. Step 5: Solve for x
    x = 130,557,874.45/12,405.26
  6. Step 6: Final answer
    x = 10,524.40

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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.