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Finding the Fourth Proportional to 14,406.77, 21,609.93 and 8,786.09

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Solution

The fourth proportional to 14,406.77, 21,609.93 and 8,786.09 is: 13,179.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,406.77 : 21,609.93 = 8,786.09 : x
  2. Step 2: Convert to fraction form
    14,406.77/21,609.93 = 8,786.09/x
  3. Step 3: Cross multiply
    14,406.77x = 21,609.93 × 8,786.09
  4. Step 4: Simplify right side
    14,406.77x = 189,866,789.87
  5. Step 5: Solve for x
    x = 189,866,789.87/14,406.77
  6. Step 6: Final answer
    x = 13,179.00

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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.