Home / 20,837,336.78-28,755,524.75-11,669,979.53

Finding the Fourth Proportional to 20,837,336.78, 28,755,524.75 and 11,669,979.53

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Solution

The fourth proportional to 20,837,336.78, 28,755,524.75 and 11,669,979.53 is: 16,104,571.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837,336.78 : 28,755,524.75 = 11,669,979.53 : x
  2. Step 2: Convert to fraction form
    20,837,336.78/28,755,524.75 = 11,669,979.53/x
  3. Step 3: Cross multiply
    20,837,336.78x = 28,755,524.75 × 11,669,979.53
  4. Step 4: Simplify right side
    20,837,336.78x = 335,576,385,004,780.88
  5. Step 5: Solve for x
    x = 335,576,385,004,780.88/20,837,336.78
  6. Step 6: Final answer
    x = 16,104,571.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.