Home / 13,399.38-18,491.50-7,349.89

Finding the Fourth Proportional to 13,399.38, 18,491.50 and 7,349.89

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Solution

The fourth proportional to 13,399.38, 18,491.50 and 7,349.89 is: 10,143.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.38 : 18,491.50 = 7,349.89 : x
  2. Step 2: Convert to fraction form
    13,399.38/18,491.50 = 7,349.89/x
  3. Step 3: Cross multiply
    13,399.38x = 18,491.50 × 7,349.89
  4. Step 4: Simplify right side
    13,399.38x = 135,910,426.33
  5. Step 5: Solve for x
    x = 135,910,426.33/13,399.38
  6. Step 6: Final answer
    x = 10,143.04

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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.