Home / 20,105.82-30,158.72-13,774.46

Finding the Fourth Proportional to 20,105.82, 30,158.72 and 13,774.46

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Solution

The fourth proportional to 20,105.82, 30,158.72 and 13,774.46 is: 20,661.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.82 : 30,158.72 = 13,774.46 : x
  2. Step 2: Convert to fraction form
    20,105.82/30,158.72 = 13,774.46/x
  3. Step 3: Cross multiply
    20,105.82x = 30,158.72 × 13,774.46
  4. Step 4: Simplify right side
    20,105.82x = 415,419,862.63
  5. Step 5: Solve for x
    x = 415,419,862.63/20,105.82
  6. Step 6: Final answer
    x = 20,661.67

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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.