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Finding the Fourth Proportional to 20,414.00, 30,623.42 and 12,512.86

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Solution

The fourth proportional to 20,414.00, 30,623.42 and 12,512.86 is: 18,770.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.00 : 30,623.42 = 12,512.86 : x
  2. Step 2: Convert to fraction form
    20,414.00/30,623.42 = 12,512.86/x
  3. Step 3: Cross multiply
    20,414.00x = 30,623.42 × 12,512.86
  4. Step 4: Simplify right side
    20,414.00x = 383,186,521.90
  5. Step 5: Solve for x
    x = 383,186,521.90/20,414.00
  6. Step 6: Final answer
    x = 18,770.77

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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.