Home / 12,556.89-18,835.47-3,791.88

Finding the Fourth Proportional to 12,556.89, 18,835.47 and 3,791.88

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Solution

The fourth proportional to 12,556.89, 18,835.47 and 3,791.88 is: 5,687.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.89 : 18,835.47 = 3,791.88 : x
  2. Step 2: Convert to fraction form
    12,556.89/18,835.47 = 3,791.88/x
  3. Step 3: Cross multiply
    12,556.89x = 18,835.47 × 3,791.88
  4. Step 4: Simplify right side
    12,556.89x = 71,421,841.98
  5. Step 5: Solve for x
    x = 71,421,841.98/12,556.89
  6. Step 6: Final answer
    x = 5,687.86

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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.