Home / 43,975.20-65,930.40-18,994.80

Finding the Fourth Proportional to 43,975.20, 65,930.40 and 18,994.80

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Solution

The fourth proportional to 43,975.20, 65,930.40 and 18,994.80 is: 28,478.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,975.20 : 65,930.40 = 18,994.80 : x
  2. Step 2: Convert to fraction form
    43,975.20/65,930.40 = 18,994.80/x
  3. Step 3: Cross multiply
    43,975.20x = 65,930.40 × 18,994.80
  4. Step 4: Simplify right side
    43,975.20x = 1,252,334,761.92
  5. Step 5: Solve for x
    x = 1,252,334,761.92/43,975.20
  6. Step 6: Final answer
    x = 28,478.21

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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.