Home / 20,540.88-30,811.50-17,559.95

Finding the Fourth Proportional to 20,540.88, 30,811.50 and 17,559.95

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Solution

The fourth proportional to 20,540.88, 30,811.50 and 17,559.95 is: 26,340.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.88 : 30,811.50 = 17,559.95 : x
  2. Step 2: Convert to fraction form
    20,540.88/30,811.50 = 17,559.95/x
  3. Step 3: Cross multiply
    20,540.88x = 30,811.50 × 17,559.95
  4. Step 4: Simplify right side
    20,540.88x = 541,048,245.37
  5. Step 5: Solve for x
    x = 541,048,245.37/20,540.88
  6. Step 6: Final answer
    x = 26,340.07

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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.