Home / 20,307.74-30,474.57-7,837.82

Finding the Fourth Proportional to 20,307.74, 30,474.57 and 7,837.82

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Solution

The fourth proportional to 20,307.74, 30,474.57 and 7,837.82 is: 11,761.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.74 : 30,474.57 = 7,837.82 : x
  2. Step 2: Convert to fraction form
    20,307.74/30,474.57 = 7,837.82/x
  3. Step 3: Cross multiply
    20,307.74x = 30,474.57 × 7,837.82
  4. Step 4: Simplify right side
    20,307.74x = 238,854,194.24
  5. Step 5: Solve for x
    x = 238,854,194.24/20,307.74
  6. Step 6: Final answer
    x = 11,761.73

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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.