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Finding the Fourth Proportional to 12,613.73, 18,920.44 and 3,848.66

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Solution

The fourth proportional to 12,613.73, 18,920.44 and 3,848.66 is: 5,772.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.73 : 18,920.44 = 3,848.66 : x
  2. Step 2: Convert to fraction form
    12,613.73/18,920.44 = 3,848.66/x
  3. Step 3: Cross multiply
    12,613.73x = 18,920.44 × 3,848.66
  4. Step 4: Simplify right side
    12,613.73x = 72,818,406.55
  5. Step 5: Solve for x
    x = 72,818,406.55/12,613.73
  6. Step 6: Final answer
    x = 5,772.95

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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.