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Finding the Fourth Proportional to 20,484.20, 30,735.48 and 9,948.44

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Solution

The fourth proportional to 20,484.20, 30,735.48 and 9,948.44 is: 14,927.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.20 : 30,735.48 = 9,948.44 : x
  2. Step 2: Convert to fraction form
    20,484.20/30,735.48 = 9,948.44/x
  3. Step 3: Cross multiply
    20,484.20x = 30,735.48 × 9,948.44
  4. Step 4: Simplify right side
    20,484.20x = 305,770,078.65
  5. Step 5: Solve for x
    x = 305,770,078.65/20,484.20
  6. Step 6: Final answer
    x = 14,927.12

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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.