Home / 45,309.54-67,986.60-20,367.21

Finding the Fourth Proportional to 45,309.54, 67,986.60 and 20,367.21

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Solution

The fourth proportional to 45,309.54, 67,986.60 and 20,367.21 is: 30,560.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,309.54 : 67,986.60 = 20,367.21 : x
  2. Step 2: Convert to fraction form
    45,309.54/67,986.60 = 20,367.21/x
  3. Step 3: Cross multiply
    45,309.54x = 67,986.60 × 20,367.21
  4. Step 4: Simplify right side
    45,309.54x = 1,384,697,359.39
  5. Step 5: Solve for x
    x = 1,384,697,359.39/45,309.54
  6. Step 6: Final answer
    x = 30,560.83

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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.