Home / 39,871.14-55,022.19-21,965.99

Finding the Fourth Proportional to 39,871.14, 55,022.19 and 21,965.99

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Solution

The fourth proportional to 39,871.14, 55,022.19 and 21,965.99 is: 30,313.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871.14 : 55,022.19 = 21,965.99 : x
  2. Step 2: Convert to fraction form
    39,871.14/55,022.19 = 21,965.99/x
  3. Step 3: Cross multiply
    39,871.14x = 55,022.19 × 21,965.99
  4. Step 4: Simplify right side
    39,871.14x = 1,208,616,517.83
  5. Step 5: Solve for x
    x = 1,208,616,517.83/39,871.14
  6. Step 6: Final answer
    x = 30,313.07

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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.