Home / 39,413.73-54,390.81-21,508.89

Finding the Fourth Proportional to 39,413.73, 54,390.81 and 21,508.89

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Solution

The fourth proportional to 39,413.73, 54,390.81 and 21,508.89 is: 29,682.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,413.73 : 54,390.81 = 21,508.89 : x
  2. Step 2: Convert to fraction form
    39,413.73/54,390.81 = 21,508.89/x
  3. Step 3: Cross multiply
    39,413.73x = 54,390.81 × 21,508.89
  4. Step 4: Simplify right side
    39,413.73x = 1,169,885,949.30
  5. Step 5: Solve for x
    x = 1,169,885,949.30/39,413.73
  6. Step 6: Final answer
    x = 29,682.19

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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.