Home / 20,771,115.80-31,162,432.80-8,646,290.60

Finding the Fourth Proportional to 20,771,115.80, 31,162,432.80 and 8,646,290.60

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Solution

The fourth proportional to 20,771,115.80, 31,162,432.80 and 8,646,290.60 is: 12,971,833.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,115.80 : 31,162,432.80 = 8,646,290.60 : x
  2. Step 2: Convert to fraction form
    20,771,115.80/31,162,432.80 = 8,646,290.60/x
  3. Step 3: Cross multiply
    20,771,115.80x = 31,162,432.80 × 8,646,290.60
  4. Step 4: Simplify right side
    20,771,115.80x = 269,439,449,791,771.69
  5. Step 5: Solve for x
    x = 269,439,449,791,771.69/20,771,115.80
  6. Step 6: Final answer
    x = 12,971,833.21

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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.