Home / 13,200,438.29-18,215,688.11-7,320,375.79

Finding the Fourth Proportional to 13,200,438.29, 18,215,688.11 and 7,320,375.79

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Solution

The fourth proportional to 13,200,438.29, 18,215,688.11 and 7,320,375.79 is: 10,101,610.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200,438.29 : 18,215,688.11 = 7,320,375.79 : x
  2. Step 2: Convert to fraction form
    13,200,438.29/18,215,688.11 = 7,320,375.79/x
  3. Step 3: Cross multiply
    13,200,438.29x = 18,215,688.11 × 7,320,375.79
  4. Step 4: Simplify right side
    13,200,438.29x = 133,345,682,156,493.75
  5. Step 5: Solve for x
    x = 133,345,682,156,493.75/13,200,438.29
  6. Step 6: Final answer
    x = 10,101,610.21

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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.