Home / 43,405.56-65,118.36-13,418.65

Finding the Fourth Proportional to 43,405.56, 65,118.36 and 13,418.65

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Solution

The fourth proportional to 43,405.56, 65,118.36 and 13,418.65 is: 20,131.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,405.56 : 65,118.36 = 13,418.65 : x
  2. Step 2: Convert to fraction form
    43,405.56/65,118.36 = 13,418.65/x
  3. Step 3: Cross multiply
    43,405.56x = 65,118.36 × 13,418.65
  4. Step 4: Simplify right side
    43,405.56x = 873,800,481.41
  5. Step 5: Solve for x
    x = 873,800,481.41/43,405.56
  6. Step 6: Final answer
    x = 20,131.07

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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.