Home / 18,882.86-28,331.97-12,136.00

Finding the Fourth Proportional to 18,882.86, 28,331.97 and 12,136.00

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Solution

The fourth proportional to 18,882.86, 28,331.97 and 12,136.00 is: 18,208.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.86 : 28,331.97 = 12,136.00 : x
  2. Step 2: Convert to fraction form
    18,882.86/28,331.97 = 12,136.00/x
  3. Step 3: Cross multiply
    18,882.86x = 28,331.97 × 12,136.00
  4. Step 4: Simplify right side
    18,882.86x = 343,836,717.09
  5. Step 5: Solve for x
    x = 343,836,717.09/18,882.86
  6. Step 6: Final answer
    x = 18,208.93

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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.