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Finding the Fourth Proportional to 20,005, 27,606.90 and 11,622.04

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Solution

The fourth proportional to 20,005, 27,606.90 and 11,622.04 is: 16,038.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005 : 27,606.90 = 11,622.04 : x
  2. Step 2: Convert to fraction form
    20,005/27,606.90 = 11,622.04/x
  3. Step 3: Cross multiply
    20,005x = 27,606.90 × 11,622.04
  4. Step 4: Simplify right side
    20,005x = 320,848,496.08
  5. Step 5: Solve for x
    x = 320,848,496.08/20,005
  6. Step 6: Final answer
    x = 16,038.42

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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.