Home / 20,635,219.80-30,953,121.30-7,856,423.28

Finding the Fourth Proportional to 20,635,219.80, 30,953,121.30 and 7,856,423.28

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Solution

The fourth proportional to 20,635,219.80, 30,953,121.30 and 7,856,423.28 is: 11,784,745.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635,219.80 : 30,953,121.30 = 7,856,423.28 : x
  2. Step 2: Convert to fraction form
    20,635,219.80/30,953,121.30 = 7,856,423.28/x
  3. Step 3: Cross multiply
    20,635,219.80x = 30,953,121.30 × 7,856,423.28
  4. Step 4: Simplify right side
    20,635,219.80x = 243,180,822,769,983.88
  5. Step 5: Solve for x
    x = 243,180,822,769,983.88/20,635,219.80
  6. Step 6: Final answer
    x = 11,784,745.94

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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.