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Finding the Fourth Proportional to 20,466.66, 30,698.60 and 7,984.38

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Solution

The fourth proportional to 20,466.66, 30,698.60 and 7,984.38 is: 11,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.66 : 30,698.60 = 7,984.38 : x
  2. Step 2: Convert to fraction form
    20,466.66/30,698.60 = 7,984.38/x
  3. Step 3: Cross multiply
    20,466.66x = 30,698.60 × 7,984.38
  4. Step 4: Simplify right side
    20,466.66x = 245,109,287.87
  5. Step 5: Solve for x
    x = 245,109,287.87/20,466.66
  6. Step 6: Final answer
    x = 11,976.03

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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.