Home / 11,278.35-16,920.45-3,381.03

Finding the Fourth Proportional to 11,278.35, 16,920.45 and 3,381.03

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Solution

The fourth proportional to 11,278.35, 16,920.45 and 3,381.03 is: 5,072.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.35 : 16,920.45 = 3,381.03 : x
  2. Step 2: Convert to fraction form
    11,278.35/16,920.45 = 3,381.03/x
  3. Step 3: Cross multiply
    11,278.35x = 16,920.45 × 3,381.03
  4. Step 4: Simplify right side
    11,278.35x = 57,208,549.06
  5. Step 5: Solve for x
    x = 57,208,549.06/11,278.35
  6. Step 6: Final answer
    x = 5,072.42

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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.