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Finding the Fourth Proportional to 20,082.94, 30,128.49 and 6,933.60

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Solution

The fourth proportional to 20,082.94, 30,128.49 and 6,933.60 is: 10,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.94 : 30,128.49 = 6,933.60 : x
  2. Step 2: Convert to fraction form
    20,082.94/30,128.49 = 6,933.60/x
  3. Step 3: Cross multiply
    20,082.94x = 30,128.49 × 6,933.60
  4. Step 4: Simplify right side
    20,082.94x = 208,898,898.26
  5. Step 5: Solve for x
    x = 208,898,898.26/20,082.94
  6. Step 6: Final answer
    x = 10,401.81

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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.