Home / 13,617.32-20,399.31-9,390.60

Finding the Fourth Proportional to 13,617.32, 20,399.31 and 9,390.60

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Solution

The fourth proportional to 13,617.32, 20,399.31 and 9,390.60 is: 14,067.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.32 : 20,399.31 = 9,390.60 : x
  2. Step 2: Convert to fraction form
    13,617.32/20,399.31 = 9,390.60/x
  3. Step 3: Cross multiply
    13,617.32x = 20,399.31 × 9,390.60
  4. Step 4: Simplify right side
    13,617.32x = 191,561,760.49
  5. Step 5: Solve for x
    x = 191,561,760.49/13,617.32
  6. Step 6: Final answer
    x = 14,067.51

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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.