Home / 20,231.71-30,326.49-11,333.99

Finding the Fourth Proportional to 20,231.71, 30,326.49 and 11,333.99

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Solution

The fourth proportional to 20,231.71, 30,326.49 and 11,333.99 is: 16,989.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.71 : 30,326.49 = 11,333.99 : x
  2. Step 2: Convert to fraction form
    20,231.71/30,326.49 = 11,333.99/x
  3. Step 3: Cross multiply
    20,231.71x = 30,326.49 × 11,333.99
  4. Step 4: Simplify right side
    20,231.71x = 343,720,134.40
  5. Step 5: Solve for x
    x = 343,720,134.40/20,231.71
  6. Step 6: Final answer
    x = 16,989.18

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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.