Home / 20,272,240.89-30,408,107.72-4,919,657.76

Finding the Fourth Proportional to 20,272,240.89, 30,408,107.72 and 4,919,657.76

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Solution

The fourth proportional to 20,272,240.89, 30,408,107.72 and 4,919,657.76 is: 7,379,425.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272,240.89 : 30,408,107.72 = 4,919,657.76 : x
  2. Step 2: Convert to fraction form
    20,272,240.89/30,408,107.72 = 4,919,657.76/x
  3. Step 3: Cross multiply
    20,272,240.89x = 30,408,107.72 × 4,919,657.76
  4. Step 4: Simplify right side
    20,272,240.89x = 149,597,483,087,015.62
  5. Step 5: Solve for x
    x = 149,597,483,087,015.62/20,272,240.89
  6. Step 6: Final answer
    x = 7,379,425.09

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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.