Home / 20,747,900.36-31,123,345.26-7,968,405.08

Finding the Fourth Proportional to 20,747,900.36, 31,123,345.26 and 7,968,405.08

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Solution

The fourth proportional to 20,747,900.36, 31,123,345.26 and 7,968,405.08 is: 11,953,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747,900.36 : 31,123,345.26 = 7,968,405.08 : x
  2. Step 2: Convert to fraction form
    20,747,900.36/31,123,345.26 = 7,968,405.08/x
  3. Step 3: Cross multiply
    20,747,900.36x = 31,123,345.26 × 7,968,405.08
  4. Step 4: Simplify right side
    20,747,900.36x = 248,003,422,476,377.94
  5. Step 5: Solve for x
    x = 248,003,422,476,377.94/20,747,900.36
  6. Step 6: Final answer
    x = 11,953,181.68

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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.