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Finding the Fourth Proportional to 18,580.80, 27,846.90 and 13,380.60

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Solution

The fourth proportional to 18,580.80, 27,846.90 and 13,380.60 is: 20,053.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,580.80 : 27,846.90 = 13,380.60 : x
  2. Step 2: Convert to fraction form
    18,580.80/27,846.90 = 13,380.60/x
  3. Step 3: Cross multiply
    18,580.80x = 27,846.90 × 13,380.60
  4. Step 4: Simplify right side
    18,580.80x = 372,608,230.14
  5. Step 5: Solve for x
    x = 372,608,230.14/18,580.80
  6. Step 6: Final answer
    x = 20,053.40

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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.