Home / 43,871.21-65,813.70-18,918.35

Finding the Fourth Proportional to 43,871.21, 65,813.70 and 18,918.35

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Solution

The fourth proportional to 43,871.21, 65,813.70 and 18,918.35 is: 28,380.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,871.21 : 65,813.70 = 18,918.35 : x
  2. Step 2: Convert to fraction form
    43,871.21/65,813.70 = 18,918.35/x
  3. Step 3: Cross multiply
    43,871.21x = 65,813.70 × 18,918.35
  4. Step 4: Simplify right side
    43,871.21x = 1,245,086,458.18
  5. Step 5: Solve for x
    x = 1,245,086,458.18/43,871.21
  6. Step 6: Final answer
    x = 28,380.49

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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.