Home / 20,379,424.08-28,123,604.28-11,211,870

Finding the Fourth Proportional to 20,379,424.08, 28,123,604.28 and 11,211,870

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Solution

The fourth proportional to 20,379,424.08, 28,123,604.28 and 11,211,870 is: 15,472,380.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379,424.08 : 28,123,604.28 = 11,211,870 : x
  2. Step 2: Convert to fraction form
    20,379,424.08/28,123,604.28 = 11,211,870/x
  3. Step 3: Cross multiply
    20,379,424.08x = 28,123,604.28 × 11,211,870
  4. Step 4: Simplify right side
    20,379,424.08x = 315,318,195,118,803.62
  5. Step 5: Solve for x
    x = 315,318,195,118,803.62/20,379,424.08
  6. Step 6: Final answer
    x = 15,472,380.08

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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.