Home / 28,766.38-39,688.09-16,821.26

Finding the Fourth Proportional to 28,766.38, 39,688.09 and 16,821.26

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Solution

The fourth proportional to 28,766.38, 39,688.09 and 16,821.26 is: 23,207.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,766.38 : 39,688.09 = 16,821.26 : x
  2. Step 2: Convert to fraction form
    28,766.38/39,688.09 = 16,821.26/x
  3. Step 3: Cross multiply
    28,766.38x = 39,688.09 × 16,821.26
  4. Step 4: Simplify right side
    28,766.38x = 667,603,589.13
  5. Step 5: Solve for x
    x = 667,603,589.13/28,766.38
  6. Step 6: Final answer
    x = 23,207.77

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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.