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Finding the Fourth Proportional to 18,453.40, 27,693.06 and 8,072.44

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Solution

The fourth proportional to 18,453.40, 27,693.06 and 8,072.44 is: 12,114.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.40 : 27,693.06 = 8,072.44 : x
  2. Step 2: Convert to fraction form
    18,453.40/27,693.06 = 8,072.44/x
  3. Step 3: Cross multiply
    18,453.40x = 27,693.06 × 8,072.44
  4. Step 4: Simplify right side
    18,453.40x = 223,550,565.27
  5. Step 5: Solve for x
    x = 223,550,565.27/18,453.40
  6. Step 6: Final answer
    x = 12,114.33

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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.