Home / 20,559.56-30,825.97-8,080.80

Finding the Fourth Proportional to 20,559.56, 30,825.97 and 8,080.80

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Solution

The fourth proportional to 20,559.56, 30,825.97 and 8,080.80 is: 12,115.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.56 : 30,825.97 = 8,080.80 : x
  2. Step 2: Convert to fraction form
    20,559.56/30,825.97 = 8,080.80/x
  3. Step 3: Cross multiply
    20,559.56x = 30,825.97 × 8,080.80
  4. Step 4: Simplify right side
    20,559.56x = 249,098,362.58
  5. Step 5: Solve for x
    x = 249,098,362.58/20,559.56
  6. Step 6: Final answer
    x = 12,115.94

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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.