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Finding the Fourth Proportional to 19,115.94, 28,672.48 and 8,022.18

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Solution

The fourth proportional to 19,115.94, 28,672.48 and 8,022.18 is: 12,032.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.94 : 28,672.48 = 8,022.18 : x
  2. Step 2: Convert to fraction form
    19,115.94/28,672.48 = 8,022.18/x
  3. Step 3: Cross multiply
    19,115.94x = 28,672.48 × 8,022.18
  4. Step 4: Simplify right side
    19,115.94x = 230,015,795.61
  5. Step 5: Solve for x
    x = 230,015,795.61/19,115.94
  6. Step 6: Final answer
    x = 12,032.67

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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.