Home / 39,413.35-54,390.57-21,508.75

Finding the Fourth Proportional to 39,413.35, 54,390.57 and 21,508.75

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Solution

The fourth proportional to 39,413.35, 54,390.57 and 21,508.75 is: 29,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,413.35 : 54,390.57 = 21,508.75 : x
  2. Step 2: Convert to fraction form
    39,413.35/54,390.57 = 21,508.75/x
  3. Step 3: Cross multiply
    39,413.35x = 54,390.57 × 21,508.75
  4. Step 4: Simplify right side
    39,413.35x = 1,169,873,172.49
  5. Step 5: Solve for x
    x = 1,169,873,172.49/39,413.35
  6. Step 6: Final answer
    x = 29,682.16

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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.