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Finding the Fourth Proportional to 30,351.49, 41,911.49 and 19,040.42

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Solution

The fourth proportional to 30,351.49, 41,911.49 and 19,040.42 is: 26,292.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351.49 : 41,911.49 = 19,040.42 : x
  2. Step 2: Convert to fraction form
    30,351.49/41,911.49 = 19,040.42/x
  3. Step 3: Cross multiply
    30,351.49x = 41,911.49 × 19,040.42
  4. Step 4: Simplify right side
    30,351.49x = 798,012,524.81
  5. Step 5: Solve for x
    x = 798,012,524.81/30,351.49
  6. Step 6: Final answer
    x = 26,292.37

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1.5x scale

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.