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Finding the Fourth Proportional to 16,370.43, 22,591.40 and 8,918.43

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Solution

The fourth proportional to 16,370.43, 22,591.40 and 8,918.43 is: 12,307.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,370.43 : 22,591.40 = 8,918.43 : x
  2. Step 2: Convert to fraction form
    16,370.43/22,591.40 = 8,918.43/x
  3. Step 3: Cross multiply
    16,370.43x = 22,591.40 × 8,918.43
  4. Step 4: Simplify right side
    16,370.43x = 201,479,774.91
  5. Step 5: Solve for x
    x = 201,479,774.91/16,370.43
  6. Step 6: Final answer
    x = 12,307.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.