Home / 13,900.38-20,850.12-3,512.10

Finding the Fourth Proportional to 13,900.38, 20,850.12 and 3,512.10

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Solution

The fourth proportional to 13,900.38, 20,850.12 and 3,512.10 is: 5,268.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.38 : 20,850.12 = 3,512.10 : x
  2. Step 2: Convert to fraction form
    13,900.38/20,850.12 = 3,512.10/x
  3. Step 3: Cross multiply
    13,900.38x = 20,850.12 × 3,512.10
  4. Step 4: Simplify right side
    13,900.38x = 73,227,706.45
  5. Step 5: Solve for x
    x = 73,227,706.45/13,900.38
  6. Step 6: Final answer
    x = 5,268.04

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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.