Home / 13,156,912.76-18,155,617.89-7,649,896.92

Finding the Fourth Proportional to 13,156,912.76, 18,155,617.89 and 7,649,896.92

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Solution

The fourth proportional to 13,156,912.76, 18,155,617.89 and 7,649,896.92 is: 10,556,321.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156,912.76 : 18,155,617.89 = 7,649,896.92 : x
  2. Step 2: Convert to fraction form
    13,156,912.76/18,155,617.89 = 7,649,896.92/x
  3. Step 3: Cross multiply
    13,156,912.76x = 18,155,617.89 × 7,649,896.92
  4. Step 4: Simplify right side
    13,156,912.76x = 138,888,605,377,407.91
  5. Step 5: Solve for x
    x = 138,888,605,377,407.91/13,156,912.76
  6. Step 6: Final answer
    x = 10,556,321.83

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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.