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Finding the Fourth Proportional to 12,203.68, 18,305.52 and 7,011.04

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Solution

The fourth proportional to 12,203.68, 18,305.52 and 7,011.04 is: 10,516.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,203.68 : 18,305.52 = 7,011.04 : x
  2. Step 2: Convert to fraction form
    12,203.68/18,305.52 = 7,011.04/x
  3. Step 3: Cross multiply
    12,203.68x = 18,305.52 × 7,011.04
  4. Step 4: Simplify right side
    12,203.68x = 128,340,732.94
  5. Step 5: Solve for x
    x = 128,340,732.94/12,203.68
  6. Step 6: Final answer
    x = 10,516.56

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.