Home / 20,120,410.60-30,165,853.65-7,983,872.80

Finding the Fourth Proportional to 20,120,410.60, 30,165,853.65 and 7,983,872.80

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Solution

The fourth proportional to 20,120,410.60, 30,165,853.65 and 7,983,872.80 is: 11,969,951.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120,410.60 : 30,165,853.65 = 7,983,872.80 : x
  2. Step 2: Convert to fraction form
    20,120,410.60/30,165,853.65 = 7,983,872.80/x
  3. Step 3: Cross multiply
    20,120,410.60x = 30,165,853.65 × 7,983,872.80
  4. Step 4: Simplify right side
    20,120,410.60x = 240,840,338,445,015.69
  5. Step 5: Solve for x
    x = 240,840,338,445,015.69/20,120,410.60
  6. Step 6: Final answer
    x = 11,969,951.47

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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.