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Finding the Fourth Proportional to 18,952.62, 28,428.99 and 4,911.64

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Solution

The fourth proportional to 18,952.62, 28,428.99 and 4,911.64 is: 7,367.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,952.62 : 28,428.99 = 4,911.64 : x
  2. Step 2: Convert to fraction form
    18,952.62/28,428.99 = 4,911.64/x
  3. Step 3: Cross multiply
    18,952.62x = 28,428.99 × 4,911.64
  4. Step 4: Simplify right side
    18,952.62x = 139,632,964.44
  5. Step 5: Solve for x
    x = 139,632,964.44/18,952.62
  6. Step 6: Final answer
    x = 7,367.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.