Home / 13,910.82-20,849.78-5,135.49

Finding the Fourth Proportional to 13,910.82, 20,849.78 and 5,135.49

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Solution

The fourth proportional to 13,910.82, 20,849.78 and 5,135.49 is: 7,697.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.82 : 20,849.78 = 5,135.49 : x
  2. Step 2: Convert to fraction form
    13,910.82/20,849.78 = 5,135.49/x
  3. Step 3: Cross multiply
    13,910.82x = 20,849.78 × 5,135.49
  4. Step 4: Simplify right side
    13,910.82x = 107,073,811.01
  5. Step 5: Solve for x
    x = 107,073,811.01/13,910.82
  6. Step 6: Final answer
    x = 7,697.16

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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.