Home / 28,857.56-39,821.68-16,109.92

Finding the Fourth Proportional to 28,857.56, 39,821.68 and 16,109.92

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Solution

The fourth proportional to 28,857.56, 39,821.68 and 16,109.92 is: 22,230.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.56 : 39,821.68 = 16,109.92 : x
  2. Step 2: Convert to fraction form
    28,857.56/39,821.68 = 16,109.92/x
  3. Step 3: Cross multiply
    28,857.56x = 39,821.68 × 16,109.92
  4. Step 4: Simplify right side
    28,857.56x = 641,524,079.07
  5. Step 5: Solve for x
    x = 641,524,079.07/28,857.56
  6. Step 6: Final answer
    x = 22,230.71

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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.