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Finding the Fourth Proportional to 22,190.50, 30,622.98 and 12,119.14

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Solution

The fourth proportional to 22,190.50, 30,622.98 and 12,119.14 is: 16,724.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.50 : 30,622.98 = 12,119.14 : x
  2. Step 2: Convert to fraction form
    22,190.50/30,622.98 = 12,119.14/x
  3. Step 3: Cross multiply
    22,190.50x = 30,622.98 × 12,119.14
  4. Step 4: Simplify right side
    22,190.50x = 371,124,181.84
  5. Step 5: Solve for x
    x = 371,124,181.84/22,190.50
  6. Step 6: Final answer
    x = 16,724.46

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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.