Home / 20,627.58-30,954.39-8,781.35

Finding the Fourth Proportional to 20,627.58, 30,954.39 and 8,781.35

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Solution

The fourth proportional to 20,627.58, 30,954.39 and 8,781.35 is: 13,177.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.58 : 30,954.39 = 8,781.35 : x
  2. Step 2: Convert to fraction form
    20,627.58/30,954.39 = 8,781.35/x
  3. Step 3: Cross multiply
    20,627.58x = 30,954.39 × 8,781.35
  4. Step 4: Simplify right side
    20,627.58x = 271,821,177.85
  5. Step 5: Solve for x
    x = 271,821,177.85/20,627.58
  6. Step 6: Final answer
    x = 13,177.56

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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.