Home / 43,815.96-65,763-20,455.56

Finding the Fourth Proportional to 43,815.96, 65,763 and 20,455.56

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Solution

The fourth proportional to 43,815.96, 65,763 and 20,455.56 is: 30,701.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,815.96 : 65,763 = 20,455.56 : x
  2. Step 2: Convert to fraction form
    43,815.96/65,763 = 20,455.56/x
  3. Step 3: Cross multiply
    43,815.96x = 65,763 × 20,455.56
  4. Step 4: Simplify right side
    43,815.96x = 1,345,218,992.28
  5. Step 5: Solve for x
    x = 1,345,218,992.28/43,815.96
  6. Step 6: Final answer
    x = 30,701.58

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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.