Home / 13,726.66-18,942.72-7,439.02

Finding the Fourth Proportional to 13,726.66, 18,942.72 and 7,439.02

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Solution

The fourth proportional to 13,726.66, 18,942.72 and 7,439.02 is: 10,265.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.66 : 18,942.72 = 7,439.02 : x
  2. Step 2: Convert to fraction form
    13,726.66/18,942.72 = 7,439.02/x
  3. Step 3: Cross multiply
    13,726.66x = 18,942.72 × 7,439.02
  4. Step 4: Simplify right side
    13,726.66x = 140,915,272.93
  5. Step 5: Solve for x
    x = 140,915,272.93/13,726.66
  6. Step 6: Final answer
    x = 10,265.81

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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.