Home / 15,794.28-21,796.20-8,721

Finding the Fourth Proportional to 15,794.28, 21,796.20 and 8,721

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Solution

The fourth proportional to 15,794.28, 21,796.20 and 8,721 is: 12,035.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,794.28 : 21,796.20 = 8,721 : x
  2. Step 2: Convert to fraction form
    15,794.28/21,796.20 = 8,721/x
  3. Step 3: Cross multiply
    15,794.28x = 21,796.20 × 8,721
  4. Step 4: Simplify right side
    15,794.28x = 190,084,660.20
  5. Step 5: Solve for x
    x = 190,084,660.20/15,794.28
  6. Step 6: Final answer
    x = 12,035.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.