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Finding the Fourth Proportional to 12,028.62, 18,036.18 and 8,284.80

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Solution

The fourth proportional to 12,028.62, 18,036.18 and 8,284.80 is: 12,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.62 : 18,036.18 = 8,284.80 : x
  2. Step 2: Convert to fraction form
    12,028.62/18,036.18 = 8,284.80/x
  3. Step 3: Cross multiply
    12,028.62x = 18,036.18 × 8,284.80
  4. Step 4: Simplify right side
    12,028.62x = 149,426,144.06
  5. Step 5: Solve for x
    x = 149,426,144.06/12,028.62
  6. Step 6: Final answer
    x = 12,422.55

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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.