Home / 20,128,512.80-30,192,769.20-6,665,340.80

Finding the Fourth Proportional to 20,128,512.80, 30,192,769.20 and 6,665,340.80

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Solution

The fourth proportional to 20,128,512.80, 30,192,769.20 and 6,665,340.80 is: 9,998,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128,512.80 : 30,192,769.20 = 6,665,340.80 : x
  2. Step 2: Convert to fraction form
    20,128,512.80/30,192,769.20 = 6,665,340.80/x
  3. Step 3: Cross multiply
    20,128,512.80x = 30,192,769.20 × 6,665,340.80
  4. Step 4: Simplify right side
    20,128,512.80x = 201,245,096,413,743.34
  5. Step 5: Solve for x
    x = 201,245,096,413,743.34/20,128,512.80
  6. Step 6: Final answer
    x = 9,998,011.20

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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.