Home / 13,921.82-20,836.35-11,135.42

Finding the Fourth Proportional to 13,921.82, 20,836.35 and 11,135.42

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Solution

The fourth proportional to 13,921.82, 20,836.35 and 11,135.42 is: 16,666.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.82 : 20,836.35 = 11,135.42 : x
  2. Step 2: Convert to fraction form
    13,921.82/20,836.35 = 11,135.42/x
  3. Step 3: Cross multiply
    13,921.82x = 20,836.35 × 11,135.42
  4. Step 4: Simplify right side
    13,921.82x = 232,021,452.84
  5. Step 5: Solve for x
    x = 232,021,452.84/13,921.82
  6. Step 6: Final answer
    x = 16,666.03

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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.