Home / 11,949.85-16,491.66-7,170

Finding the Fourth Proportional to 11,949.85, 16,491.66 and 7,170

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Solution

The fourth proportional to 11,949.85, 16,491.66 and 7,170 is: 9,895.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.85 : 16,491.66 = 7,170 : x
  2. Step 2: Convert to fraction form
    11,949.85/16,491.66 = 7,170/x
  3. Step 3: Cross multiply
    11,949.85x = 16,491.66 × 7,170
  4. Step 4: Simplify right side
    11,949.85x = 118,245,202.20
  5. Step 5: Solve for x
    x = 118,245,202.20/11,949.85
  6. Step 6: Final answer
    x = 9,895.12

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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.