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Finding the Fourth Proportional to 18,800.26, 28,210.98 and 7,714.73

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Solution

The fourth proportional to 18,800.26, 28,210.98 and 7,714.73 is: 11,576.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.26 : 28,210.98 = 7,714.73 : x
  2. Step 2: Convert to fraction form
    18,800.26/28,210.98 = 7,714.73/x
  3. Step 3: Cross multiply
    18,800.26x = 28,210.98 × 7,714.73
  4. Step 4: Simplify right side
    18,800.26x = 217,640,093.74
  5. Step 5: Solve for x
    x = 217,640,093.74/18,800.26
  6. Step 6: Final answer
    x = 11,576.44

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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.