Home / 22,057.75-30,439.70-12,121.75

Finding the Fourth Proportional to 22,057.75, 30,439.70 and 12,121.75

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Solution

The fourth proportional to 22,057.75, 30,439.70 and 12,121.75 is: 16,728.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,057.75 : 30,439.70 = 12,121.75 : x
  2. Step 2: Convert to fraction form
    22,057.75/30,439.70 = 12,121.75/x
  3. Step 3: Cross multiply
    22,057.75x = 30,439.70 × 12,121.75
  4. Step 4: Simplify right side
    22,057.75x = 368,982,433.48
  5. Step 5: Solve for x
    x = 368,982,433.48/22,057.75
  6. Step 6: Final answer
    x = 16,728.02

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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.