Home / 13,758.25-18,989.78-7,793.43

Finding the Fourth Proportional to 13,758.25, 18,989.78 and 7,793.43

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Solution

The fourth proportional to 13,758.25, 18,989.78 and 7,793.43 is: 10,756.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.25 : 18,989.78 = 7,793.43 : x
  2. Step 2: Convert to fraction form
    13,758.25/18,989.78 = 7,793.43/x
  3. Step 3: Cross multiply
    13,758.25x = 18,989.78 × 7,793.43
  4. Step 4: Simplify right side
    13,758.25x = 147,995,550.66
  5. Step 5: Solve for x
    x = 147,995,550.66/13,758.25
  6. Step 6: Final answer
    x = 10,756.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.