Home / 20,914.13-28,861.73-11,354.11

Finding the Fourth Proportional to 20,914.13, 28,861.73 and 11,354.11

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Solution

The fourth proportional to 20,914.13, 28,861.73 and 11,354.11 is: 15,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.13 : 28,861.73 = 11,354.11 : x
  2. Step 2: Convert to fraction form
    20,914.13/28,861.73 = 11,354.11/x
  3. Step 3: Cross multiply
    20,914.13x = 28,861.73 × 11,354.11
  4. Step 4: Simplify right side
    20,914.13x = 327,699,213.44
  5. Step 5: Solve for x
    x = 327,699,213.44/20,914.13
  6. Step 6: Final answer
    x = 15,668.79

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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.