Home / 13,348.38-18,419.36-7,379.09

Finding the Fourth Proportional to 13,348.38, 18,419.36 and 7,379.09

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Solution

The fourth proportional to 13,348.38, 18,419.36 and 7,379.09 is: 10,182.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.38 : 18,419.36 = 7,379.09 : x
  2. Step 2: Convert to fraction form
    13,348.38/18,419.36 = 7,379.09/x
  3. Step 3: Cross multiply
    13,348.38x = 18,419.36 × 7,379.09
  4. Step 4: Simplify right side
    13,348.38x = 135,917,986.19
  5. Step 5: Solve for x
    x = 135,917,986.19/13,348.38
  6. Step 6: Final answer
    x = 10,182.36

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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.