Home / 12,778.38-19,170.83-4,880.88

Finding the Fourth Proportional to 12,778.38, 19,170.83 and 4,880.88

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Solution

The fourth proportional to 12,778.38, 19,170.83 and 4,880.88 is: 7,322.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.38 : 19,170.83 = 4,880.88 : x
  2. Step 2: Convert to fraction form
    12,778.38/19,170.83 = 4,880.88/x
  3. Step 3: Cross multiply
    12,778.38x = 19,170.83 × 4,880.88
  4. Step 4: Simplify right side
    12,778.38x = 93,570,496.33
  5. Step 5: Solve for x
    x = 93,570,496.33/12,778.38
  6. Step 6: Final answer
    x = 7,322.56

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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.