Home / 30,747.88-46,121.85-8,561.30

Finding the Fourth Proportional to 30,747.88, 46,121.85 and 8,561.30

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Solution

The fourth proportional to 30,747.88, 46,121.85 and 8,561.30 is: 12,841.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,747.88 : 46,121.85 = 8,561.30 : x
  2. Step 2: Convert to fraction form
    30,747.88/46,121.85 = 8,561.30/x
  3. Step 3: Cross multiply
    30,747.88x = 46,121.85 × 8,561.30
  4. Step 4: Simplify right side
    30,747.88x = 394,863,109.71
  5. Step 5: Solve for x
    x = 394,863,109.71/30,747.88
  6. Step 6: Final answer
    x = 12,841.96

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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.