Home / 12,795.32-19,195.60-5,399.78

Finding the Fourth Proportional to 12,795.32, 19,195.60 and 5,399.78

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Solution

The fourth proportional to 12,795.32, 19,195.60 and 5,399.78 is: 8,100.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.32 : 19,195.60 = 5,399.78 : x
  2. Step 2: Convert to fraction form
    12,795.32/19,195.60 = 5,399.78/x
  3. Step 3: Cross multiply
    12,795.32x = 19,195.60 × 5,399.78
  4. Step 4: Simplify right side
    12,795.32x = 103,652,016.97
  5. Step 5: Solve for x
    x = 103,652,016.97/12,795.32
  6. Step 6: Final answer
    x = 8,100.78

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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.