Home / 11,965.12-17,949.50-4,172.11

Finding the Fourth Proportional to 11,965.12, 17,949.50 and 4,172.11

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Solution

The fourth proportional to 11,965.12, 17,949.50 and 4,172.11 is: 6,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,965.12 : 17,949.50 = 4,172.11 : x
  2. Step 2: Convert to fraction form
    11,965.12/17,949.50 = 4,172.11/x
  3. Step 3: Cross multiply
    11,965.12x = 17,949.50 × 4,172.11
  4. Step 4: Simplify right side
    11,965.12x = 74,887,238.36
  5. Step 5: Solve for x
    x = 74,887,238.36/11,965.12
  6. Step 6: Final answer
    x = 6,258.80

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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.