Home / 14,620.78-21,932.55-4,090.79

Finding the Fourth Proportional to 14,620.78, 21,932.55 and 4,090.79

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Solution

The fourth proportional to 14,620.78, 21,932.55 and 4,090.79 is: 6,136.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,620.78 : 21,932.55 = 4,090.79 : x
  2. Step 2: Convert to fraction form
    14,620.78/21,932.55 = 4,090.79/x
  3. Step 3: Cross multiply
    14,620.78x = 21,932.55 × 4,090.79
  4. Step 4: Simplify right side
    14,620.78x = 89,721,456.21
  5. Step 5: Solve for x
    x = 89,721,456.21/14,620.78
  6. Step 6: Final answer
    x = 6,136.57

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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.