Home / 20,412,661.80-30,577,658.40-12,712,672.20

Finding the Fourth Proportional to 20,412,661.80, 30,577,658.40 and 12,712,672.20

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Solution

The fourth proportional to 20,412,661.80, 30,577,658.40 and 12,712,672.20 is: 19,043,265.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412,661.80 : 30,577,658.40 = 12,712,672.20 : x
  2. Step 2: Convert to fraction form
    20,412,661.80/30,577,658.40 = 12,712,672.20/x
  3. Step 3: Cross multiply
    20,412,661.80x = 30,577,658.40 × 12,712,672.20
  4. Step 4: Simplify right side
    20,412,661.80x = 388,723,747,882,776.44
  5. Step 5: Solve for x
    x = 388,723,747,882,776.44/20,412,661.80
  6. Step 6: Final answer
    x = 19,043,265.97

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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.