Home / 12,378,169.70-18,567,483.78-4,291,408.88

Finding the Fourth Proportional to 12,378,169.70, 18,567,483.78 and 4,291,408.88

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Solution

The fourth proportional to 12,378,169.70, 18,567,483.78 and 4,291,408.88 is: 6,437,192.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378,169.70 : 18,567,483.78 = 4,291,408.88 : x
  2. Step 2: Convert to fraction form
    12,378,169.70/18,567,483.78 = 4,291,408.88/x
  3. Step 3: Cross multiply
    12,378,169.70x = 18,567,483.78 × 4,291,408.88
  4. Step 4: Simplify right side
    12,378,169.70x = 79,680,664,772,747.97
  5. Step 5: Solve for x
    x = 79,680,664,772,747.97/12,378,169.70
  6. Step 6: Final answer
    x = 6,437,192.79

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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.