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Finding the Fourth Proportional to 38,711, 58,076.25 and 11,009

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Solution

The fourth proportional to 38,711, 58,076.25 and 11,009 is: 16,516.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,711 : 58,076.25 = 11,009 : x
  2. Step 2: Convert to fraction form
    38,711/58,076.25 = 11,009/x
  3. Step 3: Cross multiply
    38,711x = 58,076.25 × 11,009
  4. Step 4: Simplify right side
    38,711x = 639,361,436.25
  5. Step 5: Solve for x
    x = 639,361,436.25/38,711
  6. Step 6: Final answer
    x = 16,516.27

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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.