Home / 18,706.14-25,778.86-13,391.73

Finding the Fourth Proportional to 18,706.14, 25,778.86 and 13,391.73

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Solution

The fourth proportional to 18,706.14, 25,778.86 and 13,391.73 is: 18,455.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.14 : 25,778.86 = 13,391.73 : x
  2. Step 2: Convert to fraction form
    18,706.14/25,778.86 = 13,391.73/x
  3. Step 3: Cross multiply
    18,706.14x = 25,778.86 × 13,391.73
  4. Step 4: Simplify right side
    18,706.14x = 345,223,499.35
  5. Step 5: Solve for x
    x = 345,223,499.35/18,706.14
  6. Step 6: Final answer
    x = 18,455.09

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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.