Home / 20,120,728.20-30,182,732.55-8,606,282.55

Finding the Fourth Proportional to 20,120,728.20, 30,182,732.55 and 8,606,282.55

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Solution

The fourth proportional to 20,120,728.20, 30,182,732.55 and 8,606,282.55 is: 12,910,125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120,728.20 : 30,182,732.55 = 8,606,282.55 : x
  2. Step 2: Convert to fraction form
    20,120,728.20/30,182,732.55 = 8,606,282.55/x
  3. Step 3: Cross multiply
    20,120,728.20x = 30,182,732.55 × 8,606,282.55
  4. Step 4: Simplify right side
    20,120,728.20x = 259,761,124,456,382.03
  5. Step 5: Solve for x
    x = 259,761,124,456,382.03/20,120,728.20
  6. Step 6: Final answer
    x = 12,910,125.41

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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.