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Finding the Fourth Proportional to 39,603.22, 54,651.04 and 21,698.06

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Solution

The fourth proportional to 39,603.22, 54,651.04 and 21,698.06 is: 29,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,603.22 : 54,651.04 = 21,698.06 : x
  2. Step 2: Convert to fraction form
    39,603.22/54,651.04 = 21,698.06/x
  3. Step 3: Cross multiply
    39,603.22x = 54,651.04 × 21,698.06
  4. Step 4: Simplify right side
    39,603.22x = 1,185,821,217.48
  5. Step 5: Solve for x
    x = 1,185,821,217.48/39,603.22
  6. Step 6: Final answer
    x = 29,942.55

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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.