Home / 30,378-41,923.26-17,806.80

Finding the Fourth Proportional to 30,378, 41,923.26 and 17,806.80

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Solution

The fourth proportional to 30,378, 41,923.26 and 17,806.80 is: 24,574.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378 : 41,923.26 = 17,806.80 : x
  2. Step 2: Convert to fraction form
    30,378/41,923.26 = 17,806.80/x
  3. Step 3: Cross multiply
    30,378x = 41,923.26 × 17,806.80
  4. Step 4: Simplify right side
    30,378x = 746,519,106.17
  5. Step 5: Solve for x
    x = 746,519,106.17/30,378
  6. Step 6: Final answer
    x = 24,574.33

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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.