Home / 12,385,808.70-18,578,713.05-8,081,136.60

Finding the Fourth Proportional to 12,385,808.70, 18,578,713.05 and 8,081,136.60

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Solution

The fourth proportional to 12,385,808.70, 18,578,713.05 and 8,081,136.60 is: 12,121,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385,808.70 : 18,578,713.05 = 8,081,136.60 : x
  2. Step 2: Convert to fraction form
    12,385,808.70/18,578,713.05 = 8,081,136.60/x
  3. Step 3: Cross multiply
    12,385,808.70x = 18,578,713.05 × 8,081,136.60
  4. Step 4: Simplify right side
    12,385,808.70x = 150,137,118,009,252.62
  5. Step 5: Solve for x
    x = 150,137,118,009,252.62/12,385,808.70
  6. Step 6: Final answer
    x = 12,121,704.90

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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.