Home / 28,192.58-38,912.76-16,868.78

Finding the Fourth Proportional to 28,192.58, 38,912.76 and 16,868.78

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Solution

The fourth proportional to 28,192.58, 38,912.76 and 16,868.78 is: 23,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,192.58 : 38,912.76 = 16,868.78 : x
  2. Step 2: Convert to fraction form
    28,192.58/38,912.76 = 16,868.78/x
  3. Step 3: Cross multiply
    28,192.58x = 38,912.76 × 16,868.78
  4. Step 4: Simplify right side
    28,192.58x = 656,410,787.63
  5. Step 5: Solve for x
    x = 656,410,787.63/28,192.58
  6. Step 6: Final answer
    x = 23,283.10

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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.