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Finding the Fourth Proportional to 12,815.73, 19,214.01 and 8,644.02

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Solution

The fourth proportional to 12,815.73, 19,214.01 and 8,644.02 is: 12,959.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.73 : 19,214.01 = 8,644.02 : x
  2. Step 2: Convert to fraction form
    12,815.73/19,214.01 = 8,644.02/x
  3. Step 3: Cross multiply
    12,815.73x = 19,214.01 × 8,644.02
  4. Step 4: Simplify right side
    12,815.73x = 166,086,286.72
  5. Step 5: Solve for x
    x = 166,086,286.72/12,815.73
  6. Step 6: Final answer
    x = 12,959.57

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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.