Home / 13,311.26-18,377.79-9,348.38

Finding the Fourth Proportional to 13,311.26, 18,377.79 and 9,348.38

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Solution

The fourth proportional to 13,311.26, 18,377.79 and 9,348.38 is: 12,906.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.26 : 18,377.79 = 9,348.38 : x
  2. Step 2: Convert to fraction form
    13,311.26/18,377.79 = 9,348.38/x
  3. Step 3: Cross multiply
    13,311.26x = 18,377.79 × 9,348.38
  4. Step 4: Simplify right side
    13,311.26x = 171,802,564.48
  5. Step 5: Solve for x
    x = 171,802,564.48/13,311.26
  6. Step 6: Final answer
    x = 12,906.56

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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.