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Finding the Fourth Proportional to 12,619.70, 17,413.65 and 7,314.26

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Solution

The fourth proportional to 12,619.70, 17,413.65 and 7,314.26 is: 10,092.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.70 : 17,413.65 = 7,314.26 : x
  2. Step 2: Convert to fraction form
    12,619.70/17,413.65 = 7,314.26/x
  3. Step 3: Cross multiply
    12,619.70x = 17,413.65 × 7,314.26
  4. Step 4: Simplify right side
    12,619.70x = 127,367,963.65
  5. Step 5: Solve for x
    x = 127,367,963.65/12,619.70
  6. Step 6: Final answer
    x = 10,092.79

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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.