Home / 31,651.63-43,683.78-18,221.56

Finding the Fourth Proportional to 31,651.63, 43,683.78 and 18,221.56

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Solution

The fourth proportional to 31,651.63, 43,683.78 and 18,221.56 is: 25,148.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,651.63 : 43,683.78 = 18,221.56 : x
  2. Step 2: Convert to fraction form
    31,651.63/43,683.78 = 18,221.56/x
  3. Step 3: Cross multiply
    31,651.63x = 43,683.78 × 18,221.56
  4. Step 4: Simplify right side
    31,651.63x = 795,986,618.30
  5. Step 5: Solve for x
    x = 795,986,618.30/31,651.63
  6. Step 6: Final answer
    x = 25,148.36

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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.