Home / 12,254.55-18,372.83-3,929.79

Finding the Fourth Proportional to 12,254.55, 18,372.83 and 3,929.79

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Solution

The fourth proportional to 12,254.55, 18,372.83 and 3,929.79 is: 5,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,254.55 : 18,372.83 = 3,929.79 : x
  2. Step 2: Convert to fraction form
    12,254.55/18,372.83 = 3,929.79/x
  3. Step 3: Cross multiply
    12,254.55x = 18,372.83 × 3,929.79
  4. Step 4: Simplify right side
    12,254.55x = 72,201,343.96
  5. Step 5: Solve for x
    x = 72,201,343.96/12,254.55
  6. Step 6: Final answer
    x = 5,891.80

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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.