Home / 31,245.44-43,121.64-18,669.92

Finding the Fourth Proportional to 31,245.44, 43,121.64 and 18,669.92

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Solution

The fourth proportional to 31,245.44, 43,121.64 and 18,669.92 is: 25,766.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,245.44 : 43,121.64 = 18,669.92 : x
  2. Step 2: Convert to fraction form
    31,245.44/43,121.64 = 18,669.92/x
  3. Step 3: Cross multiply
    31,245.44x = 43,121.64 × 18,669.92
  4. Step 4: Simplify right side
    31,245.44x = 805,077,569.07
  5. Step 5: Solve for x
    x = 805,077,569.07/31,245.44
  6. Step 6: Final answer
    x = 25,766.24

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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.