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Finding the Fourth Proportional to 18,684.41, 28,034.10 and 7,591.95

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Solution

The fourth proportional to 18,684.41, 28,034.10 and 7,591.95 is: 11,390.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.41 : 28,034.10 = 7,591.95 : x
  2. Step 2: Convert to fraction form
    18,684.41/28,034.10 = 7,591.95/x
  3. Step 3: Cross multiply
    18,684.41x = 28,034.10 × 7,591.95
  4. Step 4: Simplify right side
    18,684.41x = 212,833,485.50
  5. Step 5: Solve for x
    x = 212,833,485.50/18,684.41
  6. Step 6: Final answer
    x = 11,390.97

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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.