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Finding the Fourth Proportional to 14,409.92, 21,614.68 and 8,789.24

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Solution

The fourth proportional to 14,409.92, 21,614.68 and 8,789.24 is: 13,183.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,409.92 : 21,614.68 = 8,789.24 : x
  2. Step 2: Convert to fraction form
    14,409.92/21,614.68 = 8,789.24/x
  3. Step 3: Cross multiply
    14,409.92x = 21,614.68 × 8,789.24
  4. Step 4: Simplify right side
    14,409.92x = 189,976,610.04
  5. Step 5: Solve for x
    x = 189,976,610.04/14,409.92
  6. Step 6: Final answer
    x = 13,183.74

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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.