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Finding the Fourth Proportional to 12,461.89, 17,197.15 and 6,872.89

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Solution

The fourth proportional to 12,461.89, 17,197.15 and 6,872.89 is: 9,484.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.89 : 17,197.15 = 6,872.89 : x
  2. Step 2: Convert to fraction form
    12,461.89/17,197.15 = 6,872.89/x
  3. Step 3: Cross multiply
    12,461.89x = 17,197.15 × 6,872.89
  4. Step 4: Simplify right side
    12,461.89x = 118,193,999.91
  5. Step 5: Solve for x
    x = 118,193,999.91/12,461.89
  6. Step 6: Final answer
    x = 9,484.44

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Half scale
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Double scale
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Similar ratio
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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.