Home / 20,272,243.90-30,408,112.20-4,919,660.76

Finding the Fourth Proportional to 20,272,243.90, 30,408,112.20 and 4,919,660.76

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Solution

The fourth proportional to 20,272,243.90, 30,408,112.20 and 4,919,660.76 is: 7,379,429.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272,243.90 : 30,408,112.20 = 4,919,660.76 : x
  2. Step 2: Convert to fraction form
    20,272,243.90/30,408,112.20 = 4,919,660.76/x
  3. Step 3: Cross multiply
    20,272,243.90x = 30,408,112.20 × 4,919,660.76
  4. Step 4: Simplify right side
    20,272,243.90x = 149,597,596,376,017.25
  5. Step 5: Solve for x
    x = 149,597,596,376,017.25/20,272,243.90
  6. Step 6: Final answer
    x = 7,379,429.58

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1.5x scale

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.