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Finding the Fourth Proportional to 18,383.55, 27,586.67 and 8,520.99

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Solution

The fourth proportional to 18,383.55, 27,586.67 and 8,520.99 is: 12,786.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.55 : 27,586.67 = 8,520.99 : x
  2. Step 2: Convert to fraction form
    18,383.55/27,586.67 = 8,520.99/x
  3. Step 3: Cross multiply
    18,383.55x = 27,586.67 × 8,520.99
  4. Step 4: Simplify right side
    18,383.55x = 235,065,696.60
  5. Step 5: Solve for x
    x = 235,065,696.60/18,383.55
  6. Step 6: Final answer
    x = 12,786.74

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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.