Home / 31,867.24-43,969.54-18,438.16

Finding the Fourth Proportional to 31,867.24, 43,969.54 and 18,438.16

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Solution

The fourth proportional to 31,867.24, 43,969.54 and 18,438.16 is: 25,440.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,867.24 : 43,969.54 = 18,438.16 : x
  2. Step 2: Convert to fraction form
    31,867.24/43,969.54 = 18,438.16/x
  3. Step 3: Cross multiply
    31,867.24x = 43,969.54 × 18,438.16
  4. Step 4: Simplify right side
    31,867.24x = 810,717,413.65
  5. Step 5: Solve for x
    x = 810,717,413.65/31,867.24
  6. Step 6: Final answer
    x = 25,440.47

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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.