Home / 20,747,890.13-31,123,329.87-7,968,394.85

Finding the Fourth Proportional to 20,747,890.13, 31,123,329.87 and 7,968,394.85

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Solution

The fourth proportional to 20,747,890.13, 31,123,329.87 and 7,968,394.85 is: 11,953,166.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747,890.13 : 31,123,329.87 = 7,968,394.85 : x
  2. Step 2: Convert to fraction form
    20,747,890.13/31,123,329.87 = 7,968,394.85/x
  3. Step 3: Cross multiply
    20,747,890.13x = 31,123,329.87 × 7,968,394.85
  4. Step 4: Simplify right side
    20,747,890.13x = 248,002,981,325,224
  5. Step 5: Solve for x
    x = 248,002,981,325,224/20,747,890.13
  6. Step 6: Final answer
    x = 11,953,166.31

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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.