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Finding the Fourth Proportional to 14,847.81, 20,489.91 and 8,133.44

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Solution

The fourth proportional to 14,847.81, 20,489.91 and 8,133.44 is: 11,224.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,847.81 : 20,489.91 = 8,133.44 : x
  2. Step 2: Convert to fraction form
    14,847.81/20,489.91 = 8,133.44/x
  3. Step 3: Cross multiply
    14,847.81x = 20,489.91 × 8,133.44
  4. Step 4: Simplify right side
    14,847.81x = 166,653,351.14
  5. Step 5: Solve for x
    x = 166,653,351.14/14,847.81
  6. Step 6: Final answer
    x = 11,224.10

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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.