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Finding the Fourth Proportional to 20,469.45, 30,693.24 and 7,314.65

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Solution

The fourth proportional to 20,469.45, 30,693.24 and 7,314.65 is: 10,968.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.45 : 30,693.24 = 7,314.65 : x
  2. Step 2: Convert to fraction form
    20,469.45/30,693.24 = 7,314.65/x
  3. Step 3: Cross multiply
    20,469.45x = 30,693.24 × 7,314.65
  4. Step 4: Simplify right side
    20,469.45x = 224,510,154.50
  5. Step 5: Solve for x
    x = 224,510,154.50/20,469.45
  6. Step 6: Final answer
    x = 10,968.06

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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.