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Finding the Fourth Proportional to 20,412.88, 30,612.02 and 7,262.62

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Solution

The fourth proportional to 20,412.88, 30,612.02 and 7,262.62 is: 10,891.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.88 : 30,612.02 = 7,262.62 : x
  2. Step 2: Convert to fraction form
    20,412.88/30,612.02 = 7,262.62/x
  3. Step 3: Cross multiply
    20,412.88x = 30,612.02 × 7,262.62
  4. Step 4: Simplify right side
    20,412.88x = 222,323,355.85
  5. Step 5: Solve for x
    x = 222,323,355.85/20,412.88
  6. Step 6: Final answer
    x = 10,891.33

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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.