Home / 28,546.78-39,394.60-15,971.54

Finding the Fourth Proportional to 28,546.78, 39,394.60 and 15,971.54

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Solution

The fourth proportional to 28,546.78, 39,394.60 and 15,971.54 is: 22,040.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,546.78 : 39,394.60 = 15,971.54 : x
  2. Step 2: Convert to fraction form
    28,546.78/39,394.60 = 15,971.54/x
  3. Step 3: Cross multiply
    28,546.78x = 39,394.60 × 15,971.54
  4. Step 4: Simplify right side
    28,546.78x = 629,192,429.68
  5. Step 5: Solve for x
    x = 629,192,429.68/28,546.78
  6. Step 6: Final answer
    x = 22,040.75

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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.