Home / 39,413.37-54,391.61-21,509.53

Finding the Fourth Proportional to 39,413.37, 54,391.61 and 21,509.53

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Solution

The fourth proportional to 39,413.37, 54,391.61 and 21,509.53 is: 29,683.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,413.37 : 54,391.61 = 21,509.53 : x
  2. Step 2: Convert to fraction form
    39,413.37/54,391.61 = 21,509.53/x
  3. Step 3: Cross multiply
    39,413.37x = 54,391.61 × 21,509.53
  4. Step 4: Simplify right side
    39,413.37x = 1,169,937,587.54
  5. Step 5: Solve for x
    x = 1,169,937,587.54/39,413.37
  6. Step 6: Final answer
    x = 29,683.77

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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.