Home / 20,205.60-30,295.44-8,515.68

Finding the Fourth Proportional to 20,205.60, 30,295.44 and 8,515.68

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Solution

The fourth proportional to 20,205.60, 30,295.44 and 8,515.68 is: 12,768.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.60 : 30,295.44 = 8,515.68 : x
  2. Step 2: Convert to fraction form
    20,205.60/30,295.44 = 8,515.68/x
  3. Step 3: Cross multiply
    20,205.60x = 30,295.44 × 8,515.68
  4. Step 4: Simplify right side
    20,205.60x = 257,986,272.50
  5. Step 5: Solve for x
    x = 257,986,272.50/20,205.60
  6. Step 6: Final answer
    x = 12,768.06

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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.