Home / 12,761.90-17,620.01-11,413.31

Finding the Fourth Proportional to 12,761.90, 17,620.01 and 11,413.31

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Solution

The fourth proportional to 12,761.90, 17,620.01 and 11,413.31 is: 15,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.90 : 17,620.01 = 11,413.31 : x
  2. Step 2: Convert to fraction form
    12,761.90/17,620.01 = 11,413.31/x
  3. Step 3: Cross multiply
    12,761.90x = 17,620.01 × 11,413.31
  4. Step 4: Simplify right side
    12,761.90x = 201,102,636.33
  5. Step 5: Solve for x
    x = 201,102,636.33/12,761.90
  6. Step 6: Final answer
    x = 15,758.05

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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.