Home / 21,413.70-29,550.65-11,982.34

Finding the Fourth Proportional to 21,413.70, 29,550.65 and 11,982.34

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Solution

The fourth proportional to 21,413.70, 29,550.65 and 11,982.34 is: 16,535.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,413.70 : 29,550.65 = 11,982.34 : x
  2. Step 2: Convert to fraction form
    21,413.70/29,550.65 = 11,982.34/x
  3. Step 3: Cross multiply
    21,413.70x = 29,550.65 × 11,982.34
  4. Step 4: Simplify right side
    21,413.70x = 354,085,935.52
  5. Step 5: Solve for x
    x = 354,085,935.52/21,413.70
  6. Step 6: Final answer
    x = 16,535.49

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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.