Home / 13,726.28-18,942.53-7,438.66

Finding the Fourth Proportional to 13,726.28, 18,942.53 and 7,438.66

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Solution

The fourth proportional to 13,726.28, 18,942.53 and 7,438.66 is: 10,265.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.28 : 18,942.53 = 7,438.66 : x
  2. Step 2: Convert to fraction form
    13,726.28/18,942.53 = 7,438.66/x
  3. Step 3: Cross multiply
    13,726.28x = 18,942.53 × 7,438.66
  4. Step 4: Simplify right side
    13,726.28x = 140,906,955.66
  5. Step 5: Solve for x
    x = 140,906,955.66/13,726.28
  6. Step 6: Final answer
    x = 10,265.49

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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.