Home / 39,413.54-54,390.30-21,508.68

Finding the Fourth Proportional to 39,413.54, 54,390.30 and 21,508.68

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Solution

The fourth proportional to 39,413.54, 54,390.30 and 21,508.68 is: 29,681.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,413.54 : 54,390.30 = 21,508.68 : x
  2. Step 2: Convert to fraction form
    39,413.54/54,390.30 = 21,508.68/x
  3. Step 3: Cross multiply
    39,413.54x = 54,390.30 × 21,508.68
  4. Step 4: Simplify right side
    39,413.54x = 1,169,863,557.80
  5. Step 5: Solve for x
    x = 1,169,863,557.80/39,413.54
  6. Step 6: Final answer
    x = 29,681.77

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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.