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Finding the Fourth Proportional to 12,446.15, 18,669.22 and 3,681.74

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Solution

The fourth proportional to 12,446.15, 18,669.22 and 3,681.74 is: 5,522.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,446.15 : 18,669.22 = 3,681.74 : x
  2. Step 2: Convert to fraction form
    12,446.15/18,669.22 = 3,681.74/x
  3. Step 3: Cross multiply
    12,446.15x = 18,669.22 × 3,681.74
  4. Step 4: Simplify right side
    12,446.15x = 68,735,251.51
  5. Step 5: Solve for x
    x = 68,735,251.51/12,446.15
  6. Step 6: Final answer
    x = 5,522.61

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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.