Home / 21,763.44-30,033.18-12,072.78

Finding the Fourth Proportional to 21,763.44, 30,033.18 and 12,072.78

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Solution

The fourth proportional to 21,763.44, 30,033.18 and 12,072.78 is: 16,660.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763.44 : 30,033.18 = 12,072.78 : x
  2. Step 2: Convert to fraction form
    21,763.44/30,033.18 = 12,072.78/x
  3. Step 3: Cross multiply
    21,763.44x = 30,033.18 × 12,072.78
  4. Step 4: Simplify right side
    21,763.44x = 362,583,974.84
  5. Step 5: Solve for x
    x = 362,583,974.84/21,763.44
  6. Step 6: Final answer
    x = 16,660.23

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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.