Home / 30,745.20-46,099.11-12,021.75

Finding the Fourth Proportional to 30,745.20, 46,099.11 and 12,021.75

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Solution

The fourth proportional to 30,745.20, 46,099.11 and 12,021.75 is: 18,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,745.20 : 46,099.11 = 12,021.75 : x
  2. Step 2: Convert to fraction form
    30,745.20/46,099.11 = 12,021.75/x
  3. Step 3: Cross multiply
    30,745.20x = 46,099.11 × 12,021.75
  4. Step 4: Simplify right side
    30,745.20x = 554,191,975.64
  5. Step 5: Solve for x
    x = 554,191,975.64/30,745.20
  6. Step 6: Final answer
    x = 18,025.32

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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.