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Finding the Fourth Proportional to 12,373, 18,513 and 8,682.43

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Solution

The fourth proportional to 12,373, 18,513 and 8,682.43 is: 12,991.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,373 : 18,513 = 8,682.43 : x
  2. Step 2: Convert to fraction form
    12,373/18,513 = 8,682.43/x
  3. Step 3: Cross multiply
    12,373x = 18,513 × 8,682.43
  4. Step 4: Simplify right side
    12,373x = 160,737,826.59
  5. Step 5: Solve for x
    x = 160,737,826.59/12,373
  6. Step 6: Final answer
    x = 12,991.01

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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.