Home / 11,816.80-16,307.90-6,511.61

Finding the Fourth Proportional to 11,816.80, 16,307.90 and 6,511.61

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Solution

The fourth proportional to 11,816.80, 16,307.90 and 6,511.61 is: 8,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.80 : 16,307.90 = 6,511.61 : x
  2. Step 2: Convert to fraction form
    11,816.80/16,307.90 = 6,511.61/x
  3. Step 3: Cross multiply
    11,816.80x = 16,307.90 × 6,511.61
  4. Step 4: Simplify right side
    11,816.80x = 106,190,684.72
  5. Step 5: Solve for x
    x = 106,190,684.72/11,816.80
  6. Step 6: Final answer
    x = 8,986.42

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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.