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Finding the Fourth Proportional to 30,806.51, 46,213.88 and 10,811.25

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Solution

The fourth proportional to 30,806.51, 46,213.88 and 10,811.25 is: 16,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,806.51 : 46,213.88 = 10,811.25 : x
  2. Step 2: Convert to fraction form
    30,806.51/46,213.88 = 10,811.25/x
  3. Step 3: Cross multiply
    30,806.51x = 46,213.88 × 10,811.25
  4. Step 4: Simplify right side
    30,806.51x = 499,629,756.09
  5. Step 5: Solve for x
    x = 499,629,756.09/30,806.51
  6. Step 6: Final answer
    x = 16,218.32

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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.