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Finding the Fourth Proportional to 18,814.86, 28,204.02 and 6,965.28

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Solution

The fourth proportional to 18,814.86, 28,204.02 and 6,965.28 is: 10,441.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.86 : 28,204.02 = 6,965.28 : x
  2. Step 2: Convert to fraction form
    18,814.86/28,204.02 = 6,965.28/x
  3. Step 3: Cross multiply
    18,814.86x = 28,204.02 × 6,965.28
  4. Step 4: Simplify right side
    18,814.86x = 196,448,896.43
  5. Step 5: Solve for x
    x = 196,448,896.43/18,814.86
  6. Step 6: Final answer
    x = 10,441.16

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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.