Home / 18,721,858.70-28,082,788.05-10,631,708.30

Finding the Fourth Proportional to 18,721,858.70, 28,082,788.05 and 10,631,708.30

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Solution

The fourth proportional to 18,721,858.70, 28,082,788.05 and 10,631,708.30 is: 15,947,562.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,858.70 : 28,082,788.05 = 10,631,708.30 : x
  2. Step 2: Convert to fraction form
    18,721,858.70/28,082,788.05 = 10,631,708.30/x
  3. Step 3: Cross multiply
    18,721,858.70x = 28,082,788.05 × 10,631,708.30
  4. Step 4: Simplify right side
    18,721,858.70x = 298,568,010,798,325.88
  5. Step 5: Solve for x
    x = 298,568,010,798,325.88/18,721,858.70
  6. Step 6: Final answer
    x = 15,947,562.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.