Home / 13,383.21-18,475.25-9,407.73

Finding the Fourth Proportional to 13,383.21, 18,475.25 and 9,407.73

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Solution

The fourth proportional to 13,383.21, 18,475.25 and 9,407.73 is: 12,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.21 : 18,475.25 = 9,407.73 : x
  2. Step 2: Convert to fraction form
    13,383.21/18,475.25 = 9,407.73/x
  3. Step 3: Cross multiply
    13,383.21x = 18,475.25 × 9,407.73
  4. Step 4: Simplify right side
    13,383.21x = 173,810,163.68
  5. Step 5: Solve for x
    x = 173,810,163.68/13,383.21
  6. Step 6: Final answer
    x = 12,987.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.