Home / 39,578.31-54,618.67-21,674.98

Finding the Fourth Proportional to 39,578.31, 54,618.67 and 21,674.98

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Solution

The fourth proportional to 39,578.31, 54,618.67 and 21,674.98 is: 29,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,578.31 : 54,618.67 = 21,674.98 : x
  2. Step 2: Convert to fraction form
    39,578.31/54,618.67 = 21,674.98/x
  3. Step 3: Cross multiply
    39,578.31x = 54,618.67 × 21,674.98
  4. Step 4: Simplify right side
    39,578.31x = 1,183,858,579.88
  5. Step 5: Solve for x
    x = 1,183,858,579.88/39,578.31
  6. Step 6: Final answer
    x = 29,911.80

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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.