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Finding the Fourth Proportional to 12,165.60, 16,768.85 and 8,808.60

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Solution

The fourth proportional to 12,165.60, 16,768.85 and 8,808.60 is: 12,141.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.60 : 16,768.85 = 8,808.60 : x
  2. Step 2: Convert to fraction form
    12,165.60/16,768.85 = 8,808.60/x
  3. Step 3: Cross multiply
    12,165.60x = 16,768.85 × 8,808.60
  4. Step 4: Simplify right side
    12,165.60x = 147,710,048.07
  5. Step 5: Solve for x
    x = 147,710,048.07/12,165.60
  6. Step 6: Final answer
    x = 12,141.62

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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.