Home / 31,654.40-43,682.96-18,220.75

Finding the Fourth Proportional to 31,654.40, 43,682.96 and 18,220.75

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Solution

The fourth proportional to 31,654.40, 43,682.96 and 18,220.75 is: 25,144.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,654.40 : 43,682.96 = 18,220.75 : x
  2. Step 2: Convert to fraction form
    31,654.40/43,682.96 = 18,220.75/x
  3. Step 3: Cross multiply
    31,654.40x = 43,682.96 × 18,220.75
  4. Step 4: Simplify right side
    31,654.40x = 795,936,229.76
  5. Step 5: Solve for x
    x = 795,936,229.76/31,654.40
  6. Step 6: Final answer
    x = 25,144.57

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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.