Home / 20,996,893.72-28,975,713.78-11,339,101.72

Finding the Fourth Proportional to 20,996,893.72, 28,975,713.78 and 11,339,101.72

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Solution

The fourth proportional to 20,996,893.72, 28,975,713.78 and 11,339,101.72 is: 15,647,960.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996,893.72 : 28,975,713.78 = 11,339,101.72 : x
  2. Step 2: Convert to fraction form
    20,996,893.72/28,975,713.78 = 11,339,101.72/x
  3. Step 3: Cross multiply
    20,996,893.72x = 28,975,713.78 × 11,339,101.72
  4. Step 4: Simplify right side
    20,996,893.72x = 328,558,565,961,025.75
  5. Step 5: Solve for x
    x = 328,558,565,961,025.75/20,996,893.72
  6. Step 6: Final answer
    x = 15,647,960.61

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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.