Home / 18,015.20-27,006.60-11,778.20

Finding the Fourth Proportional to 18,015.20, 27,006.60 and 11,778.20

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Solution

The fourth proportional to 18,015.20, 27,006.60 and 11,778.20 is: 17,656.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,015.20 : 27,006.60 = 11,778.20 : x
  2. Step 2: Convert to fraction form
    18,015.20/27,006.60 = 11,778.20/x
  3. Step 3: Cross multiply
    18,015.20x = 27,006.60 × 11,778.20
  4. Step 4: Simplify right side
    18,015.20x = 318,089,136.12
  5. Step 5: Solve for x
    x = 318,089,136.12/18,015.20
  6. Step 6: Final answer
    x = 17,656.71

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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.