Home / 20,629.14-30,926.43-8,325.78

Finding the Fourth Proportional to 20,629.14, 30,926.43 and 8,325.78

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Solution

The fourth proportional to 20,629.14, 30,926.43 and 8,325.78 is: 12,481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.14 : 30,926.43 = 8,325.78 : x
  2. Step 2: Convert to fraction form
    20,629.14/30,926.43 = 8,325.78/x
  3. Step 3: Cross multiply
    20,629.14x = 30,926.43 × 8,325.78
  4. Step 4: Simplify right side
    20,629.14x = 257,486,652.37
  5. Step 5: Solve for x
    x = 257,486,652.37/20,629.14
  6. Step 6: Final answer
    x = 12,481.70

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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.