Home / 12,008.25-18,012.38-3,800.25

Finding the Fourth Proportional to 12,008.25, 18,012.38 and 3,800.25

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Solution

The fourth proportional to 12,008.25, 18,012.38 and 3,800.25 is: 5,700.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.25 : 18,012.38 = 3,800.25 : x
  2. Step 2: Convert to fraction form
    12,008.25/18,012.38 = 3,800.25/x
  3. Step 3: Cross multiply
    12,008.25x = 18,012.38 × 3,800.25
  4. Step 4: Simplify right side
    12,008.25x = 68,451,528.09
  5. Step 5: Solve for x
    x = 68,451,528.09/12,008.25
  6. Step 6: Final answer
    x = 5,700.38

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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.