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Finding the Fourth Proportional to 20,571.81, 30,850.03 and 8,094.63

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Solution

The fourth proportional to 20,571.81, 30,850.03 and 8,094.63 is: 12,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.81 : 30,850.03 = 8,094.63 : x
  2. Step 2: Convert to fraction form
    20,571.81/30,850.03 = 8,094.63/x
  3. Step 3: Cross multiply
    20,571.81x = 30,850.03 × 8,094.63
  4. Step 4: Simplify right side
    20,571.81x = 249,719,670.00
  5. Step 5: Solve for x
    x = 249,719,670.00/20,571.81
  6. Step 6: Final answer
    x = 12,138.93

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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.