Home / 39,399.81-54,371.22-21,494.43

Finding the Fourth Proportional to 39,399.81, 54,371.22 and 21,494.43

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Solution

The fourth proportional to 39,399.81, 54,371.22 and 21,494.43 is: 29,662.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,399.81 : 54,371.22 = 21,494.43 : x
  2. Step 2: Convert to fraction form
    39,399.81/54,371.22 = 21,494.43/x
  3. Step 3: Cross multiply
    39,399.81x = 54,371.22 × 21,494.43
  4. Step 4: Simplify right side
    39,399.81x = 1,168,678,382.30
  5. Step 5: Solve for x
    x = 1,168,678,382.30/39,399.81
  6. Step 6: Final answer
    x = 29,662.03

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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.