Home / 13,726.18-18,942.13-7,438.56

Finding the Fourth Proportional to 13,726.18, 18,942.13 and 7,438.56

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Solution

The fourth proportional to 13,726.18, 18,942.13 and 7,438.56 is: 10,265.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.18 : 18,942.13 = 7,438.56 : x
  2. Step 2: Convert to fraction form
    13,726.18/18,942.13 = 7,438.56/x
  3. Step 3: Cross multiply
    13,726.18x = 18,942.13 × 7,438.56
  4. Step 4: Simplify right side
    13,726.18x = 140,902,170.53
  5. Step 5: Solve for x
    x = 140,902,170.53/13,726.18
  6. Step 6: Final answer
    x = 10,265.21

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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.