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Finding the Fourth Proportional to 19,195.98, 28,745.67 and 12,154.68

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Solution

The fourth proportional to 19,195.98, 28,745.67 and 12,154.68 is: 18,201.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,195.98 : 28,745.67 = 12,154.68 : x
  2. Step 2: Convert to fraction form
    19,195.98/28,745.67 = 12,154.68/x
  3. Step 3: Cross multiply
    19,195.98x = 28,745.67 × 12,154.68
  4. Step 4: Simplify right side
    19,195.98x = 349,394,420.24
  5. Step 5: Solve for x
    x = 349,394,420.24/19,195.98
  6. Step 6: Final answer
    x = 18,201.44

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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.