Home / 12,480.50-18,720.66-5,083.22

Finding the Fourth Proportional to 12,480.50, 18,720.66 and 5,083.22

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Solution

The fourth proportional to 12,480.50, 18,720.66 and 5,083.22 is: 7,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.50 : 18,720.66 = 5,083.22 : x
  2. Step 2: Convert to fraction form
    12,480.50/18,720.66 = 5,083.22/x
  3. Step 3: Cross multiply
    12,480.50x = 18,720.66 × 5,083.22
  4. Step 4: Simplify right side
    12,480.50x = 95,161,233.33
  5. Step 5: Solve for x
    x = 95,161,233.33/12,480.50
  6. Step 6: Final answer
    x = 7,624.79

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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.