Home / 11,964.85-16,511.91-7,185.55

Finding the Fourth Proportional to 11,964.85, 16,511.91 and 7,185.55

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Solution

The fourth proportional to 11,964.85, 16,511.91 and 7,185.55 is: 9,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,964.85 : 16,511.91 = 7,185.55 : x
  2. Step 2: Convert to fraction form
    11,964.85/16,511.91 = 7,185.55/x
  3. Step 3: Cross multiply
    11,964.85x = 16,511.91 × 7,185.55
  4. Step 4: Simplify right side
    11,964.85x = 118,647,154.90
  5. Step 5: Solve for x
    x = 118,647,154.90/11,964.85
  6. Step 6: Final answer
    x = 9,916.31

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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.