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Finding the Fourth Proportional to 17,887.92, 26,813.44 and 11,660.12

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Solution

The fourth proportional to 17,887.92, 26,813.44 and 11,660.12 is: 17,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,887.92 : 26,813.44 = 11,660.12 : x
  2. Step 2: Convert to fraction form
    17,887.92/26,813.44 = 11,660.12/x
  3. Step 3: Cross multiply
    17,887.92x = 26,813.44 × 11,660.12
  4. Step 4: Simplify right side
    17,887.92x = 312,647,928.01
  5. Step 5: Solve for x
    x = 312,647,928.01/17,887.92
  6. Step 6: Final answer
    x = 17,478.16

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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.