Home / 11,815.85-16,306.98-6,511.43

Finding the Fourth Proportional to 11,815.85, 16,306.98 and 6,511.43

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Solution

The fourth proportional to 11,815.85, 16,306.98 and 6,511.43 is: 8,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.85 : 16,306.98 = 6,511.43 : x
  2. Step 2: Convert to fraction form
    11,815.85/16,306.98 = 6,511.43/x
  3. Step 3: Cross multiply
    11,815.85x = 16,306.98 × 6,511.43
  4. Step 4: Simplify right side
    11,815.85x = 106,181,758.78
  5. Step 5: Solve for x
    x = 106,181,758.78/11,815.85
  6. Step 6: Final answer
    x = 8,986.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.