Home / 36,405.54-54,610.78-12,380.06

Finding the Fourth Proportional to 36,405.54, 54,610.78 and 12,380.06

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Solution

The fourth proportional to 36,405.54, 54,610.78 and 12,380.06 is: 18,570.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,405.54 : 54,610.78 = 12,380.06 : x
  2. Step 2: Convert to fraction form
    36,405.54/54,610.78 = 12,380.06/x
  3. Step 3: Cross multiply
    36,405.54x = 54,610.78 × 12,380.06
  4. Step 4: Simplify right side
    36,405.54x = 676,084,733.05
  5. Step 5: Solve for x
    x = 676,084,733.05/36,405.54
  6. Step 6: Final answer
    x = 18,570.93

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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.