Home / 31,281.96-43,172.82-18,706.44

Finding the Fourth Proportional to 31,281.96, 43,172.82 and 18,706.44

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Solution

The fourth proportional to 31,281.96, 43,172.82 and 18,706.44 is: 25,817.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,281.96 : 43,172.82 = 18,706.44 : x
  2. Step 2: Convert to fraction form
    31,281.96/43,172.82 = 18,706.44/x
  3. Step 3: Cross multiply
    31,281.96x = 43,172.82 × 18,706.44
  4. Step 4: Simplify right side
    31,281.96x = 807,609,766.96
  5. Step 5: Solve for x
    x = 807,609,766.96/31,281.96
  6. Step 6: Final answer
    x = 25,817.11

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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.