Home / 20,137.68-30,175.47-10,778.94

Finding the Fourth Proportional to 20,137.68, 30,175.47 and 10,778.94

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Solution

The fourth proportional to 20,137.68, 30,175.47 and 10,778.94 is: 16,151.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.68 : 30,175.47 = 10,778.94 : x
  2. Step 2: Convert to fraction form
    20,137.68/30,175.47 = 10,778.94/x
  3. Step 3: Cross multiply
    20,137.68x = 30,175.47 × 10,778.94
  4. Step 4: Simplify right side
    20,137.68x = 325,259,580.60
  5. Step 5: Solve for x
    x = 325,259,580.60/20,137.68
  6. Step 6: Final answer
    x = 16,151.79

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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.