Home / 28,440.82-39,245.61-15,866.38

Finding the Fourth Proportional to 28,440.82, 39,245.61 and 15,866.38

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Solution

The fourth proportional to 28,440.82, 39,245.61 and 15,866.38 is: 21,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.82 : 39,245.61 = 15,866.38 : x
  2. Step 2: Convert to fraction form
    28,440.82/39,245.61 = 15,866.38/x
  3. Step 3: Cross multiply
    28,440.82x = 39,245.61 × 15,866.38
  4. Step 4: Simplify right side
    28,440.82x = 622,685,761.59
  5. Step 5: Solve for x
    x = 622,685,761.59/28,440.82
  6. Step 6: Final answer
    x = 21,894.09

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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.