Home / 12,420,805.70-18,631,208.55-3,902,003.30

Finding the Fourth Proportional to 12,420,805.70, 18,631,208.55 and 3,902,003.30

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Solution

The fourth proportional to 12,420,805.70, 18,631,208.55 and 3,902,003.30 is: 5,853,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420,805.70 : 18,631,208.55 = 3,902,003.30 : x
  2. Step 2: Convert to fraction form
    12,420,805.70/18,631,208.55 = 3,902,003.30/x
  3. Step 3: Cross multiply
    12,420,805.70x = 18,631,208.55 × 3,902,003.30
  4. Step 4: Simplify right side
    12,420,805.70x = 72,699,037,245,088.22
  5. Step 5: Solve for x
    x = 72,699,037,245,088.22/12,420,805.70
  6. Step 6: Final answer
    x = 5,853,004.95

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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.