Home / 20,517.60-28,300.18-12,563.73

Finding the Fourth Proportional to 20,517.60, 28,300.18 and 12,563.73

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Solution

The fourth proportional to 20,517.60, 28,300.18 and 12,563.73 is: 17,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.60 : 28,300.18 = 12,563.73 : x
  2. Step 2: Convert to fraction form
    20,517.60/28,300.18 = 12,563.73/x
  3. Step 3: Cross multiply
    20,517.60x = 28,300.18 × 12,563.73
  4. Step 4: Simplify right side
    20,517.60x = 355,555,820.47
  5. Step 5: Solve for x
    x = 355,555,820.47/20,517.60
  6. Step 6: Final answer
    x = 17,329.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.