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Finding the Fourth Proportional to 15,676.92, 21,634.56 and 8,963.64

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Solution

The fourth proportional to 15,676.92, 21,634.56 and 8,963.64 is: 12,370.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,676.92 : 21,634.56 = 8,963.64 : x
  2. Step 2: Convert to fraction form
    15,676.92/21,634.56 = 8,963.64/x
  3. Step 3: Cross multiply
    15,676.92x = 21,634.56 × 8,963.64
  4. Step 4: Simplify right side
    15,676.92x = 193,924,407.40
  5. Step 5: Solve for x
    x = 193,924,407.40/15,676.92
  6. Step 6: Final answer
    x = 12,370.06

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1.5x scale

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.