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Finding the Fourth Proportional to 19,213.20, 28,825.20 and 9,352.80

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Solution

The fourth proportional to 19,213.20, 28,825.20 and 9,352.80 is: 14,031.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,213.20 : 28,825.20 = 9,352.80 : x
  2. Step 2: Convert to fraction form
    19,213.20/28,825.20 = 9,352.80/x
  3. Step 3: Cross multiply
    19,213.20x = 28,825.20 × 9,352.80
  4. Step 4: Simplify right side
    19,213.20x = 269,596,330.56
  5. Step 5: Solve for x
    x = 269,596,330.56/19,213.20
  6. Step 6: Final answer
    x = 14,031.83

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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.