Home / 20,379,430.08-28,123,612.56-11,211,876

Finding the Fourth Proportional to 20,379,430.08, 28,123,612.56 and 11,211,876

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Solution

The fourth proportional to 20,379,430.08, 28,123,612.56 and 11,211,876 is: 15,472,388.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379,430.08 : 28,123,612.56 = 11,211,876 : x
  2. Step 2: Convert to fraction form
    20,379,430.08/28,123,612.56 = 11,211,876/x
  3. Step 3: Cross multiply
    20,379,430.08x = 28,123,612.56 × 11,211,876
  4. Step 4: Simplify right side
    20,379,430.08x = 315,318,456,694,762.56
  5. Step 5: Solve for x
    x = 315,318,456,694,762.56/20,379,430.08
  6. Step 6: Final answer
    x = 15,472,388.36

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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.