Home / 15,811.20-23,704.80-8,025.60

Finding the Fourth Proportional to 15,811.20, 23,704.80 and 8,025.60

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Solution

The fourth proportional to 15,811.20, 23,704.80 and 8,025.60 is: 12,032.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.20 : 23,704.80 = 8,025.60 : x
  2. Step 2: Convert to fraction form
    15,811.20/23,704.80 = 8,025.60/x
  3. Step 3: Cross multiply
    15,811.20x = 23,704.80 × 8,025.60
  4. Step 4: Simplify right side
    15,811.20x = 190,245,242.88
  5. Step 5: Solve for x
    x = 190,245,242.88/15,811.20
  6. Step 6: Final answer
    x = 12,032.31

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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.