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Finding the Fourth Proportional to 43,873.80, 65,817.59 and 18,920.94

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Solution

The fourth proportional to 43,873.80, 65,817.59 and 18,920.94 is: 28,384.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,873.80 : 65,817.59 = 18,920.94 : x
  2. Step 2: Convert to fraction form
    43,873.80/65,817.59 = 18,920.94/x
  3. Step 3: Cross multiply
    43,873.80x = 65,817.59 × 18,920.94
  4. Step 4: Simplify right side
    43,873.80x = 1,245,330,671.33
  5. Step 5: Solve for x
    x = 1,245,330,671.33/43,873.80
  6. Step 6: Final answer
    x = 28,384.38

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1.5x scale

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.