Home / 20,078.58-30,119.92-6,930.92

Finding the Fourth Proportional to 20,078.58, 30,119.92 and 6,930.92

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Solution

The fourth proportional to 20,078.58, 30,119.92 and 6,930.92 is: 10,397.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.58 : 30,119.92 = 6,930.92 : x
  2. Step 2: Convert to fraction form
    20,078.58/30,119.92 = 6,930.92/x
  3. Step 3: Cross multiply
    20,078.58x = 30,119.92 × 6,930.92
  4. Step 4: Simplify right side
    20,078.58x = 208,758,755.93
  5. Step 5: Solve for x
    x = 208,758,755.93/20,078.58
  6. Step 6: Final answer
    x = 10,397.09

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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.