Home / 12,256.45-18,379.14-3,489.28

Finding the Fourth Proportional to 12,256.45, 18,379.14 and 3,489.28

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Solution

The fourth proportional to 12,256.45, 18,379.14 and 3,489.28 is: 5,232.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.45 : 18,379.14 = 3,489.28 : x
  2. Step 2: Convert to fraction form
    12,256.45/18,379.14 = 3,489.28/x
  3. Step 3: Cross multiply
    12,256.45x = 18,379.14 × 3,489.28
  4. Step 4: Simplify right side
    12,256.45x = 64,129,965.62
  5. Step 5: Solve for x
    x = 64,129,965.62/12,256.45
  6. Step 6: Final answer
    x = 5,232.34

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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.