Home / 18,918.24-28,360.80-7,223.04

Finding the Fourth Proportional to 18,918.24, 28,360.80 and 7,223.04

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Solution

The fourth proportional to 18,918.24, 28,360.80 and 7,223.04 is: 10,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.24 : 28,360.80 = 7,223.04 : x
  2. Step 2: Convert to fraction form
    18,918.24/28,360.80 = 7,223.04/x
  3. Step 3: Cross multiply
    18,918.24x = 28,360.80 × 7,223.04
  4. Step 4: Simplify right side
    18,918.24x = 204,851,192.83
  5. Step 5: Solve for x
    x = 204,851,192.83/18,918.24
  6. Step 6: Final answer
    x = 10,828.24

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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.