Home / 18,807.24-28,207.19-7,121.37

Finding the Fourth Proportional to 18,807.24, 28,207.19 and 7,121.37

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Solution

The fourth proportional to 18,807.24, 28,207.19 and 7,121.37 is: 10,680.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.24 : 28,207.19 = 7,121.37 : x
  2. Step 2: Convert to fraction form
    18,807.24/28,207.19 = 7,121.37/x
  3. Step 3: Cross multiply
    18,807.24x = 28,207.19 × 7,121.37
  4. Step 4: Simplify right side
    18,807.24x = 200,873,801.04
  5. Step 5: Solve for x
    x = 200,873,801.04/18,807.24
  6. Step 6: Final answer
    x = 10,680.66

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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.