Home / 28,760.38-39,683.20-16,821.38

Finding the Fourth Proportional to 28,760.38, 39,683.20 and 16,821.38

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Solution

The fourth proportional to 28,760.38, 39,683.20 and 16,821.38 is: 23,209.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,760.38 : 39,683.20 = 16,821.38 : x
  2. Step 2: Convert to fraction form
    28,760.38/39,683.20 = 16,821.38/x
  3. Step 3: Cross multiply
    28,760.38x = 39,683.20 × 16,821.38
  4. Step 4: Simplify right side
    28,760.38x = 667,526,243.97
  5. Step 5: Solve for x
    x = 667,526,243.97/28,760.38
  6. Step 6: Final answer
    x = 23,209.93

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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.