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Finding the Fourth Proportional to 35,620.69, 53,413.21 and 11,920.09

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Solution

The fourth proportional to 35,620.69, 53,413.21 and 11,920.09 is: 17,874.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,620.69 : 53,413.21 = 11,920.09 : x
  2. Step 2: Convert to fraction form
    35,620.69/53,413.21 = 11,920.09/x
  3. Step 3: Cross multiply
    35,620.69x = 53,413.21 × 11,920.09
  4. Step 4: Simplify right side
    35,620.69x = 636,690,270.39
  5. Step 5: Solve for x
    x = 636,690,270.39/35,620.69
  6. Step 6: Final answer
    x = 17,874.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.