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Finding the Fourth Proportional to 19,622.85, 29,416.47 and 7,134.05

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Solution

The fourth proportional to 19,622.85, 29,416.47 and 7,134.05 is: 10,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,622.85 : 29,416.47 = 7,134.05 : x
  2. Step 2: Convert to fraction form
    19,622.85/29,416.47 = 7,134.05/x
  3. Step 3: Cross multiply
    19,622.85x = 29,416.47 × 7,134.05
  4. Step 4: Simplify right side
    19,622.85x = 209,858,567.80
  5. Step 5: Solve for x
    x = 209,858,567.80/19,622.85
  6. Step 6: Final answer
    x = 10,694.60

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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.