Home / 13,726.44-18,942.36-7,438.80

Finding the Fourth Proportional to 13,726.44, 18,942.36 and 7,438.80

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Solution

The fourth proportional to 13,726.44, 18,942.36 and 7,438.80 is: 10,265.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.44 : 18,942.36 = 7,438.80 : x
  2. Step 2: Convert to fraction form
    13,726.44/18,942.36 = 7,438.80/x
  3. Step 3: Cross multiply
    13,726.44x = 18,942.36 × 7,438.80
  4. Step 4: Simplify right side
    13,726.44x = 140,908,427.57
  5. Step 5: Solve for x
    x = 140,908,427.57/13,726.44
  6. Step 6: Final answer
    x = 10,265.48

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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.