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Finding the Fourth Proportional to 33,620.40, 50,419.76 and 11,126.88

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Solution

The fourth proportional to 33,620.40, 50,419.76 and 11,126.88 is: 16,686.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,620.40 : 50,419.76 = 11,126.88 : x
  2. Step 2: Convert to fraction form
    33,620.40/50,419.76 = 11,126.88/x
  3. Step 3: Cross multiply
    33,620.40x = 50,419.76 × 11,126.88
  4. Step 4: Simplify right side
    33,620.40x = 561,014,619.15
  5. Step 5: Solve for x
    x = 561,014,619.15/33,620.40
  6. Step 6: Final answer
    x = 16,686.73

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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.