Home / 43,579.11-65,396.31-18,619.35

Finding the Fourth Proportional to 43,579.11, 65,396.31 and 18,619.35

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Solution

The fourth proportional to 43,579.11, 65,396.31 and 18,619.35 is: 27,940.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,579.11 : 65,396.31 = 18,619.35 : x
  2. Step 2: Convert to fraction form
    43,579.11/65,396.31 = 18,619.35/x
  3. Step 3: Cross multiply
    43,579.11x = 65,396.31 × 18,619.35
  4. Step 4: Simplify right side
    43,579.11x = 1,217,636,784.60
  5. Step 5: Solve for x
    x = 1,217,636,784.60/43,579.11
  6. Step 6: Final answer
    x = 27,940.84

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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.