Home / 13,760.45-20,640.66-3,372.20

Finding the Fourth Proportional to 13,760.45, 20,640.66 and 3,372.20

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Solution

The fourth proportional to 13,760.45, 20,640.66 and 3,372.20 is: 5,058.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.45 : 20,640.66 = 3,372.20 : x
  2. Step 2: Convert to fraction form
    13,760.45/20,640.66 = 3,372.20/x
  3. Step 3: Cross multiply
    13,760.45x = 20,640.66 × 3,372.20
  4. Step 4: Simplify right side
    13,760.45x = 69,604,330.45
  5. Step 5: Solve for x
    x = 69,604,330.45/13,760.45
  6. Step 6: Final answer
    x = 5,058.29

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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.