Home / 18,515.08-27,772.00-7,418.79

Finding the Fourth Proportional to 18,515.08, 27,772.00 and 7,418.79

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Solution

The fourth proportional to 18,515.08, 27,772.00 and 7,418.79 is: 11,127.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.08 : 27,772.00 = 7,418.79 : x
  2. Step 2: Convert to fraction form
    18,515.08/27,772.00 = 7,418.79/x
  3. Step 3: Cross multiply
    18,515.08x = 27,772.00 × 7,418.79
  4. Step 4: Simplify right side
    18,515.08x = 206,034,617.33
  5. Step 5: Solve for x
    x = 206,034,617.33/18,515.08
  6. Step 6: Final answer
    x = 11,127.93

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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.