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Finding the Fourth Proportional to 11,671,980.80, 17,465,980.80 and 7,892,844.80

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Solution

The fourth proportional to 11,671,980.80, 17,465,980.80 and 7,892,844.80 is: 11,810,872.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,671,980.80 : 17,465,980.80 = 7,892,844.80 : x
  2. Step 2: Convert to fraction form
    11,671,980.80/17,465,980.80 = 7,892,844.80/x
  3. Step 3: Cross multiply
    11,671,980.80x = 17,465,980.80 × 7,892,844.80
  4. Step 4: Simplify right side
    11,671,980.80x = 137,856,275,734,179.84
  5. Step 5: Solve for x
    x = 137,856,275,734,179.84/11,671,980.80
  6. Step 6: Final answer
    x = 11,810,872.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.