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Finding the Fourth Proportional to 12,014.56, 18,015.94 and 7,018.18

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Solution

The fourth proportional to 12,014.56, 18,015.94 and 7,018.18 is: 10,523.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,014.56 : 18,015.94 = 7,018.18 : x
  2. Step 2: Convert to fraction form
    12,014.56/18,015.94 = 7,018.18/x
  3. Step 3: Cross multiply
    12,014.56x = 18,015.94 × 7,018.18
  4. Step 4: Simplify right side
    12,014.56x = 126,439,135.38
  5. Step 5: Solve for x
    x = 126,439,135.38/12,014.56
  6. Step 6: Final answer
    x = 10,523.83

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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.