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Finding the Fourth Proportional to 20,550.51, 30,825.81 and 4,968.18

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Solution

The fourth proportional to 20,550.51, 30,825.81 and 4,968.18 is: 7,452.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.51 : 30,825.81 = 4,968.18 : x
  2. Step 2: Convert to fraction form
    20,550.51/30,825.81 = 4,968.18/x
  3. Step 3: Cross multiply
    20,550.51x = 30,825.81 × 4,968.18
  4. Step 4: Simplify right side
    20,550.51x = 153,148,172.73
  5. Step 5: Solve for x
    x = 153,148,172.73/20,550.51
  6. Step 6: Final answer
    x = 7,452.28

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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.