Home / 10,431.41-15,647.13-2,640.22

Finding the Fourth Proportional to 10,431.41, 15,647.13 and 2,640.22

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Solution

The fourth proportional to 10,431.41, 15,647.13 and 2,640.22 is: 3,960.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.41 : 15,647.13 = 2,640.22 : x
  2. Step 2: Convert to fraction form
    10,431.41/15,647.13 = 2,640.22/x
  3. Step 3: Cross multiply
    10,431.41x = 15,647.13 × 2,640.22
  4. Step 4: Simplify right side
    10,431.41x = 41,311,865.57
  5. Step 5: Solve for x
    x = 41,311,865.57/10,431.41
  6. Step 6: Final answer
    x = 3,960.33

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Similar ratio
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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.