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Finding the Fourth Proportional to 18,816.53, 28,223.34 and 6,964.73

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Solution

The fourth proportional to 18,816.53, 28,223.34 and 6,964.73 is: 10,446.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.53 : 28,223.34 = 6,964.73 : x
  2. Step 2: Convert to fraction form
    18,816.53/28,223.34 = 6,964.73/x
  3. Step 3: Cross multiply
    18,816.53x = 28,223.34 × 6,964.73
  4. Step 4: Simplify right side
    18,816.53x = 196,567,907.52
  5. Step 5: Solve for x
    x = 196,567,907.52/18,816.53
  6. Step 6: Final answer
    x = 10,446.56

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1.5x scale

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.