Home / 20,783,956.20-31,176,647.10-6,406,909.80

Finding the Fourth Proportional to 20,783,956.20, 31,176,647.10 and 6,406,909.80

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Solution

The fourth proportional to 20,783,956.20, 31,176,647.10 and 6,406,909.80 is: 9,610,584.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783,956.20 : 31,176,647.10 = 6,406,909.80 : x
  2. Step 2: Convert to fraction form
    20,783,956.20/31,176,647.10 = 6,406,909.80/x
  3. Step 3: Cross multiply
    20,783,956.20x = 31,176,647.10 × 6,406,909.80
  4. Step 4: Simplify right side
    20,783,956.20x = 199,745,965,836,131.59
  5. Step 5: Solve for x
    x = 199,745,965,836,131.59/20,783,956.20
  6. Step 6: Final answer
    x = 9,610,584.43

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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.