Home / 39,413.28-54,391.48-21,509.44

Finding the Fourth Proportional to 39,413.28, 54,391.48 and 21,509.44

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Solution

The fourth proportional to 39,413.28, 54,391.48 and 21,509.44 is: 29,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,413.28 : 54,391.48 = 21,509.44 : x
  2. Step 2: Convert to fraction form
    39,413.28/54,391.48 = 21,509.44/x
  3. Step 3: Cross multiply
    39,413.28x = 54,391.48 × 21,509.44
  4. Step 4: Simplify right side
    39,413.28x = 1,169,930,084.95
  5. Step 5: Solve for x
    x = 1,169,930,084.95/39,413.28
  6. Step 6: Final answer
    x = 29,683.65

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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.