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Finding the Fourth Proportional to 18,231.80, 27,336.90 and 9,483.80

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Solution

The fourth proportional to 18,231.80, 27,336.90 and 9,483.80 is: 14,220.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.80 : 27,336.90 = 9,483.80 : x
  2. Step 2: Convert to fraction form
    18,231.80/27,336.90 = 9,483.80/x
  3. Step 3: Cross multiply
    18,231.80x = 27,336.90 × 9,483.80
  4. Step 4: Simplify right side
    18,231.80x = 259,257,692.22
  5. Step 5: Solve for x
    x = 259,257,692.22/18,231.80
  6. Step 6: Final answer
    x = 14,220.08

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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.