Home / 12,306.33-18,456.09-5,286.06

Finding the Fourth Proportional to 12,306.33, 18,456.09 and 5,286.06

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Solution

The fourth proportional to 12,306.33, 18,456.09 and 5,286.06 is: 7,927.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.33 : 18,456.09 = 5,286.06 : x
  2. Step 2: Convert to fraction form
    12,306.33/18,456.09 = 5,286.06/x
  3. Step 3: Cross multiply
    12,306.33x = 18,456.09 × 5,286.06
  4. Step 4: Simplify right side
    12,306.33x = 97,559,999.11
  5. Step 5: Solve for x
    x = 97,559,999.11/12,306.33
  6. Step 6: Final answer
    x = 7,927.63

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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.