Home / 13,760.80-20,641.28-3,372.56

Finding the Fourth Proportional to 13,760.80, 20,641.28 and 3,372.56

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Solution

The fourth proportional to 13,760.80, 20,641.28 and 3,372.56 is: 5,058.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.80 : 20,641.28 = 3,372.56 : x
  2. Step 2: Convert to fraction form
    13,760.80/20,641.28 = 3,372.56/x
  3. Step 3: Cross multiply
    13,760.80x = 20,641.28 × 3,372.56
  4. Step 4: Simplify right side
    13,760.80x = 69,613,955.28
  5. Step 5: Solve for x
    x = 69,613,955.28/13,760.80
  6. Step 6: Final answer
    x = 5,058.86

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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.