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Finding the Fourth Proportional to 14,456.77, 21,667.39 and 8,221.99

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Solution

The fourth proportional to 14,456.77, 21,667.39 and 8,221.99 is: 12,322.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,456.77 : 21,667.39 = 8,221.99 : x
  2. Step 2: Convert to fraction form
    14,456.77/21,667.39 = 8,221.99/x
  3. Step 3: Cross multiply
    14,456.77x = 21,667.39 × 8,221.99
  4. Step 4: Simplify right side
    14,456.77x = 178,149,063.91
  5. Step 5: Solve for x
    x = 178,149,063.91/14,456.77
  6. Step 6: Final answer
    x = 12,322.88

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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.