Home / 13,399.43-18,504.86-11,138.92

Finding the Fourth Proportional to 13,399.43, 18,504.86 and 11,138.92

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Solution

The fourth proportional to 13,399.43, 18,504.86 and 11,138.92 is: 15,383.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.43 : 18,504.86 = 11,138.92 : x
  2. Step 2: Convert to fraction form
    13,399.43/18,504.86 = 11,138.92/x
  3. Step 3: Cross multiply
    13,399.43x = 18,504.86 × 11,138.92
  4. Step 4: Simplify right side
    13,399.43x = 206,124,053.19
  5. Step 5: Solve for x
    x = 206,124,053.19/13,399.43
  6. Step 6: Final answer
    x = 15,383.05

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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.