Home / 20,936.55-28,892.11-11,504.91

Finding the Fourth Proportional to 20,936.55, 28,892.11 and 11,504.91

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Solution

The fourth proportional to 20,936.55, 28,892.11 and 11,504.91 is: 15,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.55 : 28,892.11 = 11,504.91 : x
  2. Step 2: Convert to fraction form
    20,936.55/28,892.11 = 11,504.91/x
  3. Step 3: Cross multiply
    20,936.55x = 28,892.11 × 11,504.91
  4. Step 4: Simplify right side
    20,936.55x = 332,401,139.64
  5. Step 5: Solve for x
    x = 332,401,139.64/20,936.55
  6. Step 6: Final answer
    x = 15,876.60

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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.