Home / 20,131,828.54-27,780,933.12-11,428,858.87

Finding the Fourth Proportional to 20,131,828.54, 27,780,933.12 and 11,428,858.87

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Solution

The fourth proportional to 20,131,828.54, 27,780,933.12 and 11,428,858.87 is: 15,771,263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131,828.54 : 27,780,933.12 = 11,428,858.87 : x
  2. Step 2: Convert to fraction form
    20,131,828.54/27,780,933.12 = 11,428,858.87/x
  3. Step 3: Cross multiply
    20,131,828.54x = 27,780,933.12 × 11,428,858.87
  4. Step 4: Simplify right side
    20,131,828.54x = 317,504,363,905,388.75
  5. Step 5: Solve for x
    x = 317,504,363,905,388.75/20,131,828.54
  6. Step 6: Final answer
    x = 15,771,263.07

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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.