Home / 20,996.96-28,942.03-14,188.85

Finding the Fourth Proportional to 20,996.96, 28,942.03 and 14,188.85

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Solution

The fourth proportional to 20,996.96, 28,942.03 and 14,188.85 is: 19,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.96 : 28,942.03 = 14,188.85 : x
  2. Step 2: Convert to fraction form
    20,996.96/28,942.03 = 14,188.85/x
  3. Step 3: Cross multiply
    20,996.96x = 28,942.03 × 14,188.85
  4. Step 4: Simplify right side
    20,996.96x = 410,654,122.37
  5. Step 5: Solve for x
    x = 410,654,122.37/20,996.96
  6. Step 6: Final answer
    x = 19,557.79

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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.