Home / 18,972.20-28,449.43-11,076.99

Finding the Fourth Proportional to 18,972.20, 28,449.43 and 11,076.99

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Solution

The fourth proportional to 18,972.20, 28,449.43 and 11,076.99 is: 16,610.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.20 : 28,449.43 = 11,076.99 : x
  2. Step 2: Convert to fraction form
    18,972.20/28,449.43 = 11,076.99/x
  3. Step 3: Cross multiply
    18,972.20x = 28,449.43 × 11,076.99
  4. Step 4: Simplify right side
    18,972.20x = 315,134,023.92
  5. Step 5: Solve for x
    x = 315,134,023.92/18,972.20
  6. Step 6: Final answer
    x = 16,610.31

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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.