Home / 20,912,103.02-31,380,431.84-8,780,633.59

Finding the Fourth Proportional to 20,912,103.02, 31,380,431.84 and 8,780,633.59

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Solution

The fourth proportional to 20,912,103.02, 31,380,431.84 and 8,780,633.59 is: 13,176,105.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,103.02 : 31,380,431.84 = 8,780,633.59 : x
  2. Step 2: Convert to fraction form
    20,912,103.02/31,380,431.84 = 8,780,633.59/x
  3. Step 3: Cross multiply
    20,912,103.02x = 31,380,431.84 × 8,780,633.59
  4. Step 4: Simplify right side
    20,912,103.02x = 275,540,073,883,009.50
  5. Step 5: Solve for x
    x = 275,540,073,883,009.50/20,912,103.02
  6. Step 6: Final answer
    x = 13,176,105.42

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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.