Home / 28,351.41-39,131.89-21,965.37

Finding the Fourth Proportional to 28,351.41, 39,131.89 and 21,965.37

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Solution

The fourth proportional to 28,351.41, 39,131.89 and 21,965.37 is: 30,317.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.41 : 39,131.89 = 21,965.37 : x
  2. Step 2: Convert to fraction form
    28,351.41/39,131.89 = 21,965.37/x
  3. Step 3: Cross multiply
    28,351.41x = 39,131.89 × 21,965.37
  4. Step 4: Simplify right side
    28,351.41x = 859,546,442.65
  5. Step 5: Solve for x
    x = 859,546,442.65/28,351.41
  6. Step 6: Final answer
    x = 30,317.59

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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.