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Finding the Fourth Proportional to 12,253.46, 16,890.18 and 9,662.12

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Solution

The fourth proportional to 12,253.46, 16,890.18 and 9,662.12 is: 13,318.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,253.46 : 16,890.18 = 9,662.12 : x
  2. Step 2: Convert to fraction form
    12,253.46/16,890.18 = 9,662.12/x
  3. Step 3: Cross multiply
    12,253.46x = 16,890.18 × 9,662.12
  4. Step 4: Simplify right side
    12,253.46x = 163,194,945.98
  5. Step 5: Solve for x
    x = 163,194,945.98/12,253.46
  6. Step 6: Final answer
    x = 13,318.27

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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.