Home / 13,726.80-18,942.93-7,439.13

Finding the Fourth Proportional to 13,726.80, 18,942.93 and 7,439.13

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Solution

The fourth proportional to 13,726.80, 18,942.93 and 7,439.13 is: 10,265.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.80 : 18,942.93 = 7,439.13 : x
  2. Step 2: Convert to fraction form
    13,726.80/18,942.93 = 7,439.13/x
  3. Step 3: Cross multiply
    13,726.80x = 18,942.93 × 7,439.13
  4. Step 4: Simplify right side
    13,726.80x = 140,918,918.85
  5. Step 5: Solve for x
    x = 140,918,918.85/13,726.80
  6. Step 6: Final answer
    x = 10,265.97

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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.