Home / 27,781.80-41,643.54-19,986.36

Finding the Fourth Proportional to 27,781.80, 41,643.54 and 19,986.36

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Solution

The fourth proportional to 27,781.80, 41,643.54 and 19,986.36 is: 29,958.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.80 : 41,643.54 = 19,986.36 : x
  2. Step 2: Convert to fraction form
    27,781.80/41,643.54 = 19,986.36/x
  3. Step 3: Cross multiply
    27,781.80x = 41,643.54 × 19,986.36
  4. Step 4: Simplify right side
    27,781.80x = 832,302,782.11
  5. Step 5: Solve for x
    x = 832,302,782.11/27,781.80
  6. Step 6: Final answer
    x = 29,958.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.