Home / 20,334.25-28,078.77-12,793.15

Finding the Fourth Proportional to 20,334.25, 28,078.77 and 12,793.15

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Solution

The fourth proportional to 20,334.25, 28,078.77 and 12,793.15 is: 17,665.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.25 : 28,078.77 = 12,793.15 : x
  2. Step 2: Convert to fraction form
    20,334.25/28,078.77 = 12,793.15/x
  3. Step 3: Cross multiply
    20,334.25x = 28,078.77 × 12,793.15
  4. Step 4: Simplify right side
    20,334.25x = 359,215,894.20
  5. Step 5: Solve for x
    x = 359,215,894.20/20,334.25
  6. Step 6: Final answer
    x = 17,665.56

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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.