Home / 39,945.12-55,121.40-22,040.16

Finding the Fourth Proportional to 39,945.12, 55,121.40 and 22,040.16

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Solution

The fourth proportional to 39,945.12, 55,121.40 and 22,040.16 is: 30,413.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,945.12 : 55,121.40 = 22,040.16 : x
  2. Step 2: Convert to fraction form
    39,945.12/55,121.40 = 22,040.16/x
  3. Step 3: Cross multiply
    39,945.12x = 55,121.40 × 22,040.16
  4. Step 4: Simplify right side
    39,945.12x = 1,214,884,475.42
  5. Step 5: Solve for x
    x = 1,214,884,475.42/39,945.12
  6. Step 6: Final answer
    x = 30,413.84

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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.