Home / 13,395.62-18,486.33-8,091.38

Finding the Fourth Proportional to 13,395.62, 18,486.33 and 8,091.38

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Solution

The fourth proportional to 13,395.62, 18,486.33 and 8,091.38 is: 11,166.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.62 : 18,486.33 = 8,091.38 : x
  2. Step 2: Convert to fraction form
    13,395.62/18,486.33 = 8,091.38/x
  3. Step 3: Cross multiply
    13,395.62x = 18,486.33 × 8,091.38
  4. Step 4: Simplify right side
    13,395.62x = 149,579,920.84
  5. Step 5: Solve for x
    x = 149,579,920.84/13,395.62
  6. Step 6: Final answer
    x = 11,166.33

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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.