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Finding the Fourth Proportional to 19,627.48, 29,431.62 and 6,474.64

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Solution

The fourth proportional to 19,627.48, 29,431.62 and 6,474.64 is: 9,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,627.48 : 29,431.62 = 6,474.64 : x
  2. Step 2: Convert to fraction form
    19,627.48/29,431.62 = 6,474.64/x
  3. Step 3: Cross multiply
    19,627.48x = 29,431.62 × 6,474.64
  4. Step 4: Simplify right side
    19,627.48x = 190,559,144.12
  5. Step 5: Solve for x
    x = 190,559,144.12/19,627.48
  6. Step 6: Final answer
    x = 9,708.79

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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.