Home / 13,726.46-18,942.57-7,438.82

Finding the Fourth Proportional to 13,726.46, 18,942.57 and 7,438.82

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Solution

The fourth proportional to 13,726.46, 18,942.57 and 7,438.82 is: 10,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.46 : 18,942.57 = 7,438.82 : x
  2. Step 2: Convert to fraction form
    13,726.46/18,942.57 = 7,438.82/x
  3. Step 3: Cross multiply
    13,726.46x = 18,942.57 × 7,438.82
  4. Step 4: Simplify right side
    13,726.46x = 140,910,368.57
  5. Step 5: Solve for x
    x = 140,910,368.57/13,726.46
  6. Step 6: Final answer
    x = 10,265.60

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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.