Home / 13,119,827.88-18,105,812.10-7,612,786.92

Finding the Fourth Proportional to 13,119,827.88, 18,105,812.10 and 7,612,786.92

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Solution

The fourth proportional to 13,119,827.88, 18,105,812.10 and 7,612,786.92 is: 10,505,906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119,827.88 : 18,105,812.10 = 7,612,786.92 : x
  2. Step 2: Convert to fraction form
    13,119,827.88/18,105,812.10 = 7,612,786.92/x
  3. Step 3: Cross multiply
    13,119,827.88x = 18,105,812.10 × 7,612,786.92
  4. Step 4: Simplify right side
    13,119,827.88x = 137,835,689,530,857.73
  5. Step 5: Solve for x
    x = 137,835,689,530,857.73/13,119,827.88
  6. Step 6: Final answer
    x = 10,505,906.85

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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.