Home / 39,578.81-54,619.99-21,675.51

Finding the Fourth Proportional to 39,578.81, 54,619.99 and 21,675.51

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Solution

The fourth proportional to 39,578.81, 54,619.99 and 21,675.51 is: 29,912.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,578.81 : 54,619.99 = 21,675.51 : x
  2. Step 2: Convert to fraction form
    39,578.81/54,619.99 = 21,675.51/x
  3. Step 3: Cross multiply
    39,578.81x = 54,619.99 × 21,675.51
  4. Step 4: Simplify right side
    39,578.81x = 1,183,916,085.26
  5. Step 5: Solve for x
    x = 1,183,916,085.26/39,578.81
  6. Step 6: Final answer
    x = 29,912.88

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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.