Home / 28,428.39-39,220.92-16,940.97

Finding the Fourth Proportional to 28,428.39, 39,220.92 and 16,940.97

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Solution

The fourth proportional to 28,428.39, 39,220.92 and 16,940.97 is: 23,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.39 : 39,220.92 = 16,940.97 : x
  2. Step 2: Convert to fraction form
    28,428.39/39,220.92 = 16,940.97/x
  3. Step 3: Cross multiply
    28,428.39x = 39,220.92 × 16,940.97
  4. Step 4: Simplify right side
    28,428.39x = 664,440,429.09
  5. Step 5: Solve for x
    x = 664,440,429.09/28,428.39
  6. Step 6: Final answer
    x = 23,372.43

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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.