Home / 28,636.21-42,928.39-10,163.89

Finding the Fourth Proportional to 28,636.21, 42,928.39 and 10,163.89

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Solution

The fourth proportional to 28,636.21, 42,928.39 and 10,163.89 is: 15,236.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.21 : 42,928.39 = 10,163.89 : x
  2. Step 2: Convert to fraction form
    28,636.21/42,928.39 = 10,163.89/x
  3. Step 3: Cross multiply
    28,636.21x = 42,928.39 × 10,163.89
  4. Step 4: Simplify right side
    28,636.21x = 436,319,433.84
  5. Step 5: Solve for x
    x = 436,319,433.84/28,636.21
  6. Step 6: Final answer
    x = 15,236.63

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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.