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Finding the Fourth Proportional to 11,863.99, 17,828.31 and 6,321.29

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Solution

The fourth proportional to 11,863.99, 17,828.31 and 6,321.29 is: 9,499.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,863.99 : 17,828.31 = 6,321.29 : x
  2. Step 2: Convert to fraction form
    11,863.99/17,828.31 = 6,321.29/x
  3. Step 3: Cross multiply
    11,863.99x = 17,828.31 × 6,321.29
  4. Step 4: Simplify right side
    11,863.99x = 112,697,917.72
  5. Step 5: Solve for x
    x = 112,697,917.72/11,863.99
  6. Step 6: Final answer
    x = 9,499.16

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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.