Home / 12,385,809.70-18,578,714.55-8,081,137.60

Finding the Fourth Proportional to 12,385,809.70, 18,578,714.55 and 8,081,137.60

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Solution

The fourth proportional to 12,385,809.70, 18,578,714.55 and 8,081,137.60 is: 12,121,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385,809.70 : 18,578,714.55 = 8,081,137.60 : x
  2. Step 2: Convert to fraction form
    12,385,809.70/18,578,714.55 = 8,081,137.60/x
  3. Step 3: Cross multiply
    12,385,809.70x = 18,578,714.55 × 8,081,137.60
  4. Step 4: Simplify right side
    12,385,809.70x = 150,137,148,709,672.09
  5. Step 5: Solve for x
    x = 150,137,148,709,672.09/12,385,809.70
  6. Step 6: Final answer
    x = 12,121,706.40

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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.