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Finding the Fourth Proportional to 22,065.78, 30,450.90 and 11,994.30

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Solution

The fourth proportional to 22,065.78, 30,450.90 and 11,994.30 is: 16,552.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,065.78 : 30,450.90 = 11,994.30 : x
  2. Step 2: Convert to fraction form
    22,065.78/30,450.90 = 11,994.30/x
  3. Step 3: Cross multiply
    22,065.78x = 30,450.90 × 11,994.30
  4. Step 4: Simplify right side
    22,065.78x = 365,237,229.87
  5. Step 5: Solve for x
    x = 365,237,229.87/22,065.78
  6. Step 6: Final answer
    x = 16,552.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.