Home / 20,412,672.30-30,619,008.45-18,782,919.90

Finding the Fourth Proportional to 20,412,672.30, 30,619,008.45 and 18,782,919.90

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Solution

The fourth proportional to 20,412,672.30, 30,619,008.45 and 18,782,919.90 is: 28,174,379.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412,672.30 : 30,619,008.45 = 18,782,919.90 : x
  2. Step 2: Convert to fraction form
    20,412,672.30/30,619,008.45 = 18,782,919.90/x
  3. Step 3: Cross multiply
    20,412,672.30x = 30,619,008.45 × 18,782,919.90
  4. Step 4: Simplify right side
    20,412,672.30x = 575,114,383,133,773.12
  5. Step 5: Solve for x
    x = 575,114,383,133,773.12/20,412,672.30
  6. Step 6: Final answer
    x = 28,174,379.85

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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.