Home / 11,940.85-16,478.31-6,636.16

Finding the Fourth Proportional to 11,940.85, 16,478.31 and 6,636.16

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Solution

The fourth proportional to 11,940.85, 16,478.31 and 6,636.16 is: 9,157.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,940.85 : 16,478.31 = 6,636.16 : x
  2. Step 2: Convert to fraction form
    11,940.85/16,478.31 = 6,636.16/x
  3. Step 3: Cross multiply
    11,940.85x = 16,478.31 × 6,636.16
  4. Step 4: Simplify right side
    11,940.85x = 109,352,701.69
  5. Step 5: Solve for x
    x = 109,352,701.69/11,940.85
  6. Step 6: Final answer
    x = 9,157.87

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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.