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Finding the Fourth Proportional to 12,461.76, 17,198.82 and 7,746.66

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Solution

The fourth proportional to 12,461.76, 17,198.82 and 7,746.66 is: 10,691.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.76 : 17,198.82 = 7,746.66 : x
  2. Step 2: Convert to fraction form
    12,461.76/17,198.82 = 7,746.66/x
  3. Step 3: Cross multiply
    12,461.76x = 17,198.82 × 7,746.66
  4. Step 4: Simplify right side
    12,461.76x = 133,233,410.94
  5. Step 5: Solve for x
    x = 133,233,410.94/12,461.76
  6. Step 6: Final answer
    x = 10,691.38

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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.