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Finding the Fourth Proportional to 18,470.20, 27,714.30 and 8,604.40

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Solution

The fourth proportional to 18,470.20, 27,714.30 and 8,604.40 is: 12,910.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.20 : 27,714.30 = 8,604.40 : x
  2. Step 2: Convert to fraction form
    18,470.20/27,714.30 = 8,604.40/x
  3. Step 3: Cross multiply
    18,470.20x = 27,714.30 × 8,604.40
  4. Step 4: Simplify right side
    18,470.20x = 238,464,922.92
  5. Step 5: Solve for x
    x = 238,464,922.92/18,470.20
  6. Step 6: Final answer
    x = 12,910.79

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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.