Home / 18,717.88-28,076.73-7,621.96

Finding the Fourth Proportional to 18,717.88, 28,076.73 and 7,621.96

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Solution

The fourth proportional to 18,717.88, 28,076.73 and 7,621.96 is: 11,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.88 : 28,076.73 = 7,621.96 : x
  2. Step 2: Convert to fraction form
    18,717.88/28,076.73 = 7,621.96/x
  3. Step 3: Cross multiply
    18,717.88x = 28,076.73 × 7,621.96
  4. Step 4: Simplify right side
    18,717.88x = 213,999,712.99
  5. Step 5: Solve for x
    x = 213,999,712.99/18,717.88
  6. Step 6: Final answer
    x = 11,432.90

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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.