Home / 19,982.67-29,971.16-8,141.61

Finding the Fourth Proportional to 19,982.67, 29,971.16 and 8,141.61

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Solution

The fourth proportional to 19,982.67, 29,971.16 and 8,141.61 is: 12,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.67 : 29,971.16 = 8,141.61 : x
  2. Step 2: Convert to fraction form
    19,982.67/29,971.16 = 8,141.61/x
  3. Step 3: Cross multiply
    19,982.67x = 29,971.16 × 8,141.61
  4. Step 4: Simplify right side
    19,982.67x = 244,013,305.40
  5. Step 5: Solve for x
    x = 244,013,305.40/19,982.67
  6. Step 6: Final answer
    x = 12,211.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.