Home / 20,661.24-30,982.28-6,618.66

Finding the Fourth Proportional to 20,661.24, 30,982.28 and 6,618.66

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Solution

The fourth proportional to 20,661.24, 30,982.28 and 6,618.66 is: 9,924.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.24 : 30,982.28 = 6,618.66 : x
  2. Step 2: Convert to fraction form
    20,661.24/30,982.28 = 6,618.66/x
  3. Step 3: Cross multiply
    20,661.24x = 30,982.28 × 6,618.66
  4. Step 4: Simplify right side
    20,661.24x = 205,061,177.34
  5. Step 5: Solve for x
    x = 205,061,177.34/20,661.24
  6. Step 6: Final answer
    x = 9,924.92

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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.