Home / 31,698.41-43,740.77-18,949.07

Finding the Fourth Proportional to 31,698.41, 43,740.77 and 18,949.07

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Solution

The fourth proportional to 31,698.41, 43,740.77 and 18,949.07 is: 26,147.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,698.41 : 43,740.77 = 18,949.07 : x
  2. Step 2: Convert to fraction form
    31,698.41/43,740.77 = 18,949.07/x
  3. Step 3: Cross multiply
    31,698.41x = 43,740.77 × 18,949.07
  4. Step 4: Simplify right side
    31,698.41x = 828,846,912.58
  5. Step 5: Solve for x
    x = 828,846,912.58/31,698.41
  6. Step 6: Final answer
    x = 26,147.90

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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.