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Finding the Fourth Proportional to 16,638.78, 22,960.71 and 9,563.58

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Solution

The fourth proportional to 16,638.78, 22,960.71 and 9,563.58 is: 13,197.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,638.78 : 22,960.71 = 9,563.58 : x
  2. Step 2: Convert to fraction form
    16,638.78/22,960.71 = 9,563.58/x
  3. Step 3: Cross multiply
    16,638.78x = 22,960.71 × 9,563.58
  4. Step 4: Simplify right side
    16,638.78x = 219,586,586.94
  5. Step 5: Solve for x
    x = 219,586,586.94/16,638.78
  6. Step 6: Final answer
    x = 13,197.28

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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.