Home / 13,122,120.21-18,108,537.17-7,320,902.84

Finding the Fourth Proportional to 13,122,120.21, 18,108,537.17 and 7,320,902.84

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Solution

The fourth proportional to 13,122,120.21, 18,108,537.17 and 7,320,902.84 is: 10,102,852.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,120.21 : 18,108,537.17 = 7,320,902.84 : x
  2. Step 2: Convert to fraction form
    13,122,120.21/18,108,537.17 = 7,320,902.84/x
  3. Step 3: Cross multiply
    13,122,120.21x = 18,108,537.17 × 7,320,902.84
  4. Step 4: Simplify right side
    13,122,120.21x = 132,570,841,204,765.39
  5. Step 5: Solve for x
    x = 132,570,841,204,765.39/13,122,120.21
  6. Step 6: Final answer
    x = 10,102,852.21

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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.