Home / 20,705.88-31,063.86-6,665.97

Finding the Fourth Proportional to 20,705.88, 31,063.86 and 6,665.97

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Solution

The fourth proportional to 20,705.88, 31,063.86 and 6,665.97 is: 10,000.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.88 : 31,063.86 = 6,665.97 : x
  2. Step 2: Convert to fraction form
    20,705.88/31,063.86 = 6,665.97/x
  3. Step 3: Cross multiply
    20,705.88x = 31,063.86 × 6,665.97
  4. Step 4: Simplify right side
    20,705.88x = 207,070,758.84
  5. Step 5: Solve for x
    x = 207,070,758.84/20,705.88
  6. Step 6: Final answer
    x = 10,000.58

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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.