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Finding the Fourth Proportional to 14,723.40, 20,318.09 and 8,009.09

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Solution

The fourth proportional to 14,723.40, 20,318.09 and 8,009.09 is: 11,052.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,723.40 : 20,318.09 = 8,009.09 : x
  2. Step 2: Convert to fraction form
    14,723.40/20,318.09 = 8,009.09/x
  3. Step 3: Cross multiply
    14,723.40x = 20,318.09 × 8,009.09
  4. Step 4: Simplify right side
    14,723.40x = 162,729,269.80
  5. Step 5: Solve for x
    x = 162,729,269.80/14,723.40
  6. Step 6: Final answer
    x = 11,052.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.