Home / 20,116,647,939.70-30,174,971,909.55-18,157,543,837.30

Finding the Fourth Proportional to 20,116,647,939.70, 30,174,971,909.55 and 18,157,543,837.30

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Solution

The fourth proportional to 20,116,647,939.70, 30,174,971,909.55 and 18,157,543,837.30 is: 27,236,315,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116,647,939.70 : 30,174,971,909.55 = 18,157,543,837.30 : x
  2. Step 2: Convert to fraction form
    20,116,647,939.70/30,174,971,909.55 = 18,157,543,837.30/x
  3. Step 3: Cross multiply
    20,116,647,939.70x = 30,174,971,909.55 × 18,157,543,837.30
  4. Step 4: Simplify right side
    20,116,647,939.70x = 547,903,375,236,950,196,224
  5. Step 5: Solve for x
    x = 547,903,375,236,950,196,224/20,116,647,939.70
  6. Step 6: Final answer
    x = 27,236,315,755.95

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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.