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Finding the Fourth Proportional to 18,673.46, 28,014.51 and 8,286.02

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Solution

The fourth proportional to 18,673.46, 28,014.51 and 8,286.02 is: 12,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.46 : 28,014.51 = 8,286.02 : x
  2. Step 2: Convert to fraction form
    18,673.46/28,014.51 = 8,286.02/x
  3. Step 3: Cross multiply
    18,673.46x = 28,014.51 × 8,286.02
  4. Step 4: Simplify right side
    18,673.46x = 232,128,790.15
  5. Step 5: Solve for x
    x = 232,128,790.15/18,673.46
  6. Step 6: Final answer
    x = 12,430.95

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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.