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Finding the Fourth Proportional to 12,165.35, 16,768.50 and 8,808.35

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Solution

The fourth proportional to 12,165.35, 16,768.50 and 8,808.35 is: 12,141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.35 : 16,768.50 = 8,808.35 : x
  2. Step 2: Convert to fraction form
    12,165.35/16,768.50 = 8,808.35/x
  3. Step 3: Cross multiply
    12,165.35x = 16,768.50 × 8,808.35
  4. Step 4: Simplify right side
    12,165.35x = 147,702,816.98
  5. Step 5: Solve for x
    x = 147,702,816.98/12,165.35
  6. Step 6: Final answer
    x = 12,141.27

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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.