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Finding the Fourth Proportional to 20,485.88, 30,736.16 and 8,014.86

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Solution

The fourth proportional to 20,485.88, 30,736.16 and 8,014.86 is: 12,025.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.88 : 30,736.16 = 8,014.86 : x
  2. Step 2: Convert to fraction form
    20,485.88/30,736.16 = 8,014.86/x
  3. Step 3: Cross multiply
    20,485.88x = 30,736.16 × 8,014.86
  4. Step 4: Simplify right side
    20,485.88x = 246,345,825.58
  5. Step 5: Solve for x
    x = 246,345,825.58/20,485.88
  6. Step 6: Final answer
    x = 12,025.16

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1.5x scale

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.