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Finding the Fourth Proportional to 13,753.85, 20,609.15 and 10,641.60

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Solution

The fourth proportional to 13,753.85, 20,609.15 and 10,641.60 is: 15,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.85 : 20,609.15 = 10,641.60 : x
  2. Step 2: Convert to fraction form
    13,753.85/20,609.15 = 10,641.60/x
  3. Step 3: Cross multiply
    13,753.85x = 20,609.15 × 10,641.60
  4. Step 4: Simplify right side
    13,753.85x = 219,314,277.43
  5. Step 5: Solve for x
    x = 219,314,277.43/13,753.85
  6. Step 6: Final answer
    x = 15,945.67

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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.