Home / 10,431.36-15,647.10-2,640.16

Finding the Fourth Proportional to 10,431.36, 15,647.10 and 2,640.16

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Solution

The fourth proportional to 10,431.36, 15,647.10 and 2,640.16 is: 3,960.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.36 : 15,647.10 = 2,640.16 : x
  2. Step 2: Convert to fraction form
    10,431.36/15,647.10 = 2,640.16/x
  3. Step 3: Cross multiply
    10,431.36x = 15,647.10 × 2,640.16
  4. Step 4: Simplify right side
    10,431.36x = 41,310,847.54
  5. Step 5: Solve for x
    x = 41,310,847.54/10,431.36
  6. Step 6: Final answer
    x = 3,960.26

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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.