Home / 13,383.24-18,449.62-9,391.98

Finding the Fourth Proportional to 13,383.24, 18,449.62 and 9,391.98

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Solution

The fourth proportional to 13,383.24, 18,449.62 and 9,391.98 is: 12,947.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.24 : 18,449.62 = 9,391.98 : x
  2. Step 2: Convert to fraction form
    13,383.24/18,449.62 = 9,391.98/x
  3. Step 3: Cross multiply
    13,383.24x = 18,449.62 × 9,391.98
  4. Step 4: Simplify right side
    13,383.24x = 173,278,462.05
  5. Step 5: Solve for x
    x = 173,278,462.05/13,383.24
  6. Step 6: Final answer
    x = 12,947.42

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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.