Home / 18,778.05-25,912.85-10,395.09

Finding the Fourth Proportional to 18,778.05, 25,912.85 and 10,395.09

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Solution

The fourth proportional to 18,778.05, 25,912.85 and 10,395.09 is: 14,344.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.05 : 25,912.85 = 10,395.09 : x
  2. Step 2: Convert to fraction form
    18,778.05/25,912.85 = 10,395.09/x
  3. Step 3: Cross multiply
    18,778.05x = 25,912.85 × 10,395.09
  4. Step 4: Simplify right side
    18,778.05x = 269,366,355.93
  5. Step 5: Solve for x
    x = 269,366,355.93/18,778.05
  6. Step 6: Final answer
    x = 14,344.75

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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.