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Finding the Fourth Proportional to 38,704.96, 53,413.43 and 21,712.97

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Solution

The fourth proportional to 38,704.96, 53,413.43 and 21,712.97 is: 29,964.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,704.96 : 53,413.43 = 21,712.97 : x
  2. Step 2: Convert to fraction form
    38,704.96/53,413.43 = 21,712.97/x
  3. Step 3: Cross multiply
    38,704.96x = 53,413.43 × 21,712.97
  4. Step 4: Simplify right side
    38,704.96x = 1,159,764,203.19
  5. Step 5: Solve for x
    x = 1,159,764,203.19/38,704.96
  6. Step 6: Final answer
    x = 29,964.23

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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.