Home / 20,269,895.96-27,975,239.44-12,428,021.38

Finding the Fourth Proportional to 20,269,895.96, 27,975,239.44 and 12,428,021.38

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Solution

The fourth proportional to 20,269,895.96, 27,975,239.44 and 12,428,021.38 is: 17,152,375.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269,895.96 : 27,975,239.44 = 12,428,021.38 : x
  2. Step 2: Convert to fraction form
    20,269,895.96/27,975,239.44 = 12,428,021.38/x
  3. Step 3: Cross multiply
    20,269,895.96x = 27,975,239.44 × 12,428,021.38
  4. Step 4: Simplify right side
    20,269,895.96x = 347,676,873,870,939.25
  5. Step 5: Solve for x
    x = 347,676,873,870,939.25/20,269,895.96
  6. Step 6: Final answer
    x = 17,152,375.85

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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.