Home / 20,914.03-28,861.43-11,961.76

Finding the Fourth Proportional to 20,914.03, 28,861.43 and 11,961.76

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Solution

The fourth proportional to 20,914.03, 28,861.43 and 11,961.76 is: 16,507.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.03 : 28,861.43 = 11,961.76 : x
  2. Step 2: Convert to fraction form
    20,914.03/28,861.43 = 11,961.76/x
  3. Step 3: Cross multiply
    20,914.03x = 28,861.43 × 11,961.76
  4. Step 4: Simplify right side
    20,914.03x = 345,233,498.92
  5. Step 5: Solve for x
    x = 345,233,498.92/20,914.03
  6. Step 6: Final answer
    x = 16,507.27

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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.