Home / 12,310.22-18,468.24-3,990.24

Finding the Fourth Proportional to 12,310.22, 18,468.24 and 3,990.24

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Solution

The fourth proportional to 12,310.22, 18,468.24 and 3,990.24 is: 5,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.22 : 18,468.24 = 3,990.24 : x
  2. Step 2: Convert to fraction form
    12,310.22/18,468.24 = 3,990.24/x
  3. Step 3: Cross multiply
    12,310.22x = 18,468.24 × 3,990.24
  4. Step 4: Simplify right side
    12,310.22x = 73,692,659.91
  5. Step 5: Solve for x
    x = 73,692,659.91/12,310.22
  6. Step 6: Final answer
    x = 5,986.30

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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.