Home / 20,857,629.06-28,780,882.13-11,435,940.86

Finding the Fourth Proportional to 20,857,629.06, 28,780,882.13 and 11,435,940.86

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Solution

The fourth proportional to 20,857,629.06, 28,780,882.13 and 11,435,940.86 is: 15,780,147.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857,629.06 : 28,780,882.13 = 11,435,940.86 : x
  2. Step 2: Convert to fraction form
    20,857,629.06/28,780,882.13 = 11,435,940.86/x
  3. Step 3: Cross multiply
    20,857,629.06x = 28,780,882.13 × 11,435,940.86
  4. Step 4: Simplify right side
    20,857,629.06x = 329,136,465,736,226.75
  5. Step 5: Solve for x
    x = 329,136,465,736,226.75/20,857,629.06
  6. Step 6: Final answer
    x = 15,780,147.63

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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.