Home / 28,857.29-39,821.67-16,755.89

Finding the Fourth Proportional to 28,857.29, 39,821.67 and 16,755.89

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Solution

The fourth proportional to 28,857.29, 39,821.67 and 16,755.89 is: 23,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.29 : 39,821.67 = 16,755.89 : x
  2. Step 2: Convert to fraction form
    28,857.29/39,821.67 = 16,755.89/x
  3. Step 3: Cross multiply
    28,857.29x = 39,821.67 × 16,755.89
  4. Step 4: Simplify right side
    28,857.29x = 667,247,323.03
  5. Step 5: Solve for x
    x = 667,247,323.03/28,857.29
  6. Step 6: Final answer
    x = 23,122.32

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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.