Home / 13,633.68-18,815.03-7,665.33

Finding the Fourth Proportional to 13,633.68, 18,815.03 and 7,665.33

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Solution

The fourth proportional to 13,633.68, 18,815.03 and 7,665.33 is: 10,578.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.68 : 18,815.03 = 7,665.33 : x
  2. Step 2: Convert to fraction form
    13,633.68/18,815.03 = 7,665.33/x
  3. Step 3: Cross multiply
    13,633.68x = 18,815.03 × 7,665.33
  4. Step 4: Simplify right side
    13,633.68x = 144,223,413.91
  5. Step 5: Solve for x
    x = 144,223,413.91/13,633.68
  6. Step 6: Final answer
    x = 10,578.47

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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.