Home / 13,759.39-18,990.06-11,098.54

Finding the Fourth Proportional to 13,759.39, 18,990.06 and 11,098.54

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Solution

The fourth proportional to 13,759.39, 18,990.06 and 11,098.54 is: 15,317.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.39 : 18,990.06 = 11,098.54 : x
  2. Step 2: Convert to fraction form
    13,759.39/18,990.06 = 11,098.54/x
  3. Step 3: Cross multiply
    13,759.39x = 18,990.06 × 11,098.54
  4. Step 4: Simplify right side
    13,759.39x = 210,761,845.56
  5. Step 5: Solve for x
    x = 210,761,845.56/13,759.39
  6. Step 6: Final answer
    x = 15,317.68

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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.