Home / 20,629.62-30,919.05-9,521.28

Finding the Fourth Proportional to 20,629.62, 30,919.05 and 9,521.28

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Solution

The fourth proportional to 20,629.62, 30,919.05 and 9,521.28 is: 14,270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.62 : 30,919.05 = 9,521.28 : x
  2. Step 2: Convert to fraction form
    20,629.62/30,919.05 = 9,521.28/x
  3. Step 3: Cross multiply
    20,629.62x = 30,919.05 × 9,521.28
  4. Step 4: Simplify right side
    20,629.62x = 294,388,932.38
  5. Step 5: Solve for x
    x = 294,388,932.38/20,629.62
  6. Step 6: Final answer
    x = 14,270.21

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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.