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Finding the Fourth Proportional to 14,093.85, 19,449.26 and 7,720.57

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Solution

The fourth proportional to 14,093.85, 19,449.26 and 7,720.57 is: 10,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,093.85 : 19,449.26 = 7,720.57 : x
  2. Step 2: Convert to fraction form
    14,093.85/19,449.26 = 7,720.57/x
  3. Step 3: Cross multiply
    14,093.85x = 19,449.26 × 7,720.57
  4. Step 4: Simplify right side
    14,093.85x = 150,159,321.97
  5. Step 5: Solve for x
    x = 150,159,321.97/14,093.85
  6. Step 6: Final answer
    x = 10,654.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.