Home / 13,726.36-18,942.41-7,438.74

Finding the Fourth Proportional to 13,726.36, 18,942.41 and 7,438.74

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Solution

The fourth proportional to 13,726.36, 18,942.41 and 7,438.74 is: 10,265.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.36 : 18,942.41 = 7,438.74 : x
  2. Step 2: Convert to fraction form
    13,726.36/18,942.41 = 7,438.74/x
  3. Step 3: Cross multiply
    13,726.36x = 18,942.41 × 7,438.74
  4. Step 4: Simplify right side
    13,726.36x = 140,907,568.68
  5. Step 5: Solve for x
    x = 140,907,568.68/13,726.36
  6. Step 6: Final answer
    x = 10,265.47

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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.