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Finding the Fourth Proportional to 9,930.70, 13,704.61 and 5,454.74

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Solution

The fourth proportional to 9,930.70, 13,704.61 and 5,454.74 is: 7,527.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.70 : 13,704.61 = 5,454.74 : x
  2. Step 2: Convert to fraction form
    9,930.70/13,704.61 = 5,454.74/x
  3. Step 3: Cross multiply
    9,930.70x = 13,704.61 × 5,454.74
  4. Step 4: Simplify right side
    9,930.70x = 74,755,115.20
  5. Step 5: Solve for x
    x = 74,755,115.20/9,930.70
  6. Step 6: Final answer
    x = 7,527.68

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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.