Home / 27,832.60-38,413.86-21,140.38

Finding the Fourth Proportional to 27,832.60, 38,413.86 and 21,140.38

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Solution

The fourth proportional to 27,832.60, 38,413.86 and 21,140.38 is: 29,177.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,832.60 : 38,413.86 = 21,140.38 : x
  2. Step 2: Convert to fraction form
    27,832.60/38,413.86 = 21,140.38/x
  3. Step 3: Cross multiply
    27,832.60x = 38,413.86 × 21,140.38
  4. Step 4: Simplify right side
    27,832.60x = 812,083,597.67
  5. Step 5: Solve for x
    x = 812,083,597.67/27,832.60
  6. Step 6: Final answer
    x = 29,177.42

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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.