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Finding the Fourth Proportional to 19,104.78, 28,658.09 and 8,011.83

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Solution

The fourth proportional to 19,104.78, 28,658.09 and 8,011.83 is: 12,018.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,104.78 : 28,658.09 = 8,011.83 : x
  2. Step 2: Convert to fraction form
    19,104.78/28,658.09 = 8,011.83/x
  3. Step 3: Cross multiply
    19,104.78x = 28,658.09 × 8,011.83
  4. Step 4: Simplify right side
    19,104.78x = 229,603,705.15
  5. Step 5: Solve for x
    x = 229,603,705.15/19,104.78
  6. Step 6: Final answer
    x = 12,018.13

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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.