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Finding the Fourth Proportional to 20,108.25, 30,164.00 and 6,257.25

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Solution

The fourth proportional to 20,108.25, 30,164.00 and 6,257.25 is: 9,386.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.25 : 30,164.00 = 6,257.25 : x
  2. Step 2: Convert to fraction form
    20,108.25/30,164.00 = 6,257.25/x
  3. Step 3: Cross multiply
    20,108.25x = 30,164.00 × 6,257.25
  4. Step 4: Simplify right side
    20,108.25x = 188,743,657.71
  5. Step 5: Solve for x
    x = 188,743,657.71/20,108.25
  6. Step 6: Final answer
    x = 9,386.38

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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.