Home / 19,972.28-29,958.42-6,121.28

Finding the Fourth Proportional to 19,972.28, 29,958.42 and 6,121.28

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Solution

The fourth proportional to 19,972.28, 29,958.42 and 6,121.28 is: 9,181.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.28 : 29,958.42 = 6,121.28 : x
  2. Step 2: Convert to fraction form
    19,972.28/29,958.42 = 6,121.28/x
  3. Step 3: Cross multiply
    19,972.28x = 29,958.42 × 6,121.28
  4. Step 4: Simplify right side
    19,972.28x = 183,383,877.18
  5. Step 5: Solve for x
    x = 183,383,877.18/19,972.28
  6. Step 6: Final answer
    x = 9,181.92

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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.