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Finding the Fourth Proportional to 19,267.47, 28,906.47 and 8,174.79

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Solution

The fourth proportional to 19,267.47, 28,906.47 and 8,174.79 is: 12,264.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,267.47 : 28,906.47 = 8,174.79 : x
  2. Step 2: Convert to fraction form
    19,267.47/28,906.47 = 8,174.79/x
  3. Step 3: Cross multiply
    19,267.47x = 28,906.47 × 8,174.79
  4. Step 4: Simplify right side
    19,267.47x = 236,304,321.89
  5. Step 5: Solve for x
    x = 236,304,321.89/19,267.47
  6. Step 6: Final answer
    x = 12,264.42

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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.