Home / 28,936.22-39,920.22-18,861.12

Finding the Fourth Proportional to 28,936.22, 39,920.22 and 18,861.12

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Solution

The fourth proportional to 28,936.22, 39,920.22 and 18,861.12 is: 26,020.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936.22 : 39,920.22 = 18,861.12 : x
  2. Step 2: Convert to fraction form
    28,936.22/39,920.22 = 18,861.12/x
  3. Step 3: Cross multiply
    28,936.22x = 39,920.22 × 18,861.12
  4. Step 4: Simplify right side
    28,936.22x = 752,940,059.85
  5. Step 5: Solve for x
    x = 752,940,059.85/28,936.22
  6. Step 6: Final answer
    x = 26,020.68

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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.