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Finding the Fourth Proportional to 13,771.58, 20,645.87 and 6,381.34

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Solution

The fourth proportional to 13,771.58, 20,645.87 and 6,381.34 is: 9,566.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.58 : 20,645.87 = 6,381.34 : x
  2. Step 2: Convert to fraction form
    13,771.58/20,645.87 = 6,381.34/x
  3. Step 3: Cross multiply
    13,771.58x = 20,645.87 × 6,381.34
  4. Step 4: Simplify right side
    13,771.58x = 131,748,316.07
  5. Step 5: Solve for x
    x = 131,748,316.07/13,771.58
  6. Step 6: Final answer
    x = 9,566.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.