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Finding the Fourth Proportional to 20,082.80, 30,083.88 and 11,304.56

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Solution

The fourth proportional to 20,082.80, 30,083.88 and 11,304.56 is: 16,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.80 : 30,083.88 = 11,304.56 : x
  2. Step 2: Convert to fraction form
    20,082.80/30,083.88 = 11,304.56/x
  3. Step 3: Cross multiply
    20,082.80x = 30,083.88 × 11,304.56
  4. Step 4: Simplify right side
    20,082.80x = 340,085,026.49
  5. Step 5: Solve for x
    x = 340,085,026.49/20,082.80
  6. Step 6: Final answer
    x = 16,934.14

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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.