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Finding the Fourth Proportional to 12,461.89, 17,196.92 and 6,872.89

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Solution

The fourth proportional to 12,461.89, 17,196.92 and 6,872.89 is: 9,484.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.89 : 17,196.92 = 6,872.89 : x
  2. Step 2: Convert to fraction form
    12,461.89/17,196.92 = 6,872.89/x
  3. Step 3: Cross multiply
    12,461.89x = 17,196.92 × 6,872.89
  4. Step 4: Simplify right side
    12,461.89x = 118,192,470.70
  5. Step 5: Solve for x
    x = 118,192,470.70/12,461.89
  6. Step 6: Final answer
    x = 9,484.32

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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.