Home / 20,379,471.40-28,123,879.62-11,677,455.64

Finding the Fourth Proportional to 20,379,471.40, 28,123,879.62 and 11,677,455.64

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Solution

The fourth proportional to 20,379,471.40, 28,123,879.62 and 11,677,455.64 is: 16,115,008.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379,471.40 : 28,123,879.62 = 11,677,455.64 : x
  2. Step 2: Convert to fraction form
    20,379,471.40/28,123,879.62 = 11,677,455.64/x
  3. Step 3: Cross multiply
    20,379,471.40x = 28,123,879.62 × 11,677,455.64
  4. Step 4: Simplify right side
    20,379,471.40x = 328,415,356,687,250.06
  5. Step 5: Solve for x
    x = 328,415,356,687,250.06/20,379,471.40
  6. Step 6: Final answer
    x = 16,115,008.59

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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.