Home / 18,180.96-27,219.60-12,328.80

Finding the Fourth Proportional to 18,180.96, 27,219.60 and 12,328.80

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Solution

The fourth proportional to 18,180.96, 27,219.60 and 12,328.80 is: 18,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,180.96 : 27,219.60 = 12,328.80 : x
  2. Step 2: Convert to fraction form
    18,180.96/27,219.60 = 12,328.80/x
  3. Step 3: Cross multiply
    18,180.96x = 27,219.60 × 12,328.80
  4. Step 4: Simplify right side
    18,180.96x = 335,585,004.48
  5. Step 5: Solve for x
    x = 335,585,004.48/18,180.96
  6. Step 6: Final answer
    x = 18,458.05

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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.