Home / 13,190.38-19,786.79-4,426.58

Finding the Fourth Proportional to 13,190.38, 19,786.79 and 4,426.58

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Solution

The fourth proportional to 13,190.38, 19,786.79 and 4,426.58 is: 6,640.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.38 : 19,786.79 = 4,426.58 : x
  2. Step 2: Convert to fraction form
    13,190.38/19,786.79 = 4,426.58/x
  3. Step 3: Cross multiply
    13,190.38x = 19,786.79 × 4,426.58
  4. Step 4: Simplify right side
    13,190.38x = 87,587,869.41
  5. Step 5: Solve for x
    x = 87,587,869.41/13,190.38
  6. Step 6: Final answer
    x = 6,640.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.