Home / 31,986.83-47,980.25-8,613.27

Finding the Fourth Proportional to 31,986.83, 47,980.25 and 8,613.27

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Solution

The fourth proportional to 31,986.83, 47,980.25 and 8,613.27 is: 12,919.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.83 : 47,980.25 = 8,613.27 : x
  2. Step 2: Convert to fraction form
    31,986.83/47,980.25 = 8,613.27/x
  3. Step 3: Cross multiply
    31,986.83x = 47,980.25 × 8,613.27
  4. Step 4: Simplify right side
    31,986.83x = 413,266,804.85
  5. Step 5: Solve for x
    x = 413,266,804.85/31,986.83
  6. Step 6: Final answer
    x = 12,919.91

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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.