Home / 13,760.34-20,640.57-3,372.09

Finding the Fourth Proportional to 13,760.34, 20,640.57 and 3,372.09

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Solution

The fourth proportional to 13,760.34, 20,640.57 and 3,372.09 is: 5,058.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.34 : 20,640.57 = 3,372.09 : x
  2. Step 2: Convert to fraction form
    13,760.34/20,640.57 = 3,372.09/x
  3. Step 3: Cross multiply
    13,760.34x = 20,640.57 × 3,372.09
  4. Step 4: Simplify right side
    13,760.34x = 69,601,859.69
  5. Step 5: Solve for x
    x = 69,601,859.69/13,760.34
  6. Step 6: Final answer
    x = 5,058.15

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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.