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Finding the Fourth Proportional to 11,651.99, 17,480.30 and 6,720.48

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Solution

The fourth proportional to 11,651.99, 17,480.30 and 6,720.48 is: 10,082.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,651.99 : 17,480.30 = 6,720.48 : x
  2. Step 2: Convert to fraction form
    11,651.99/17,480.30 = 6,720.48/x
  3. Step 3: Cross multiply
    11,651.99x = 17,480.30 × 6,720.48
  4. Step 4: Simplify right side
    11,651.99x = 117,475,972.94
  5. Step 5: Solve for x
    x = 117,475,972.94/11,651.99
  6. Step 6: Final answer
    x = 10,082.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.