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Finding the Fourth Proportional to 19,107.92, 28,644.78 and 7,418.36

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Solution

The fourth proportional to 19,107.92, 28,644.78 and 7,418.36 is: 11,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.92 : 28,644.78 = 7,418.36 : x
  2. Step 2: Convert to fraction form
    19,107.92/28,644.78 = 7,418.36/x
  3. Step 3: Cross multiply
    19,107.92x = 28,644.78 × 7,418.36
  4. Step 4: Simplify right side
    19,107.92x = 212,497,290.16
  5. Step 5: Solve for x
    x = 212,497,290.16/19,107.92
  6. Step 6: Final answer
    x = 11,120.90

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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.