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Finding the Fourth Proportional to 20,491.58, 30,741.99 and 6,261.33

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Solution

The fourth proportional to 20,491.58, 30,741.99 and 6,261.33 is: 9,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.58 : 30,741.99 = 6,261.33 : x
  2. Step 2: Convert to fraction form
    20,491.58/30,741.99 = 6,261.33/x
  3. Step 3: Cross multiply
    20,491.58x = 30,741.99 × 6,261.33
  4. Step 4: Simplify right side
    20,491.58x = 192,485,744.25
  5. Step 5: Solve for x
    x = 192,485,744.25/20,491.58
  6. Step 6: Final answer
    x = 9,393.41

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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.