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Finding the Fourth Proportional to 12,663.95, 17,476.17 and 6,999.09

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Solution

The fourth proportional to 12,663.95, 17,476.17 and 6,999.09 is: 9,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.95 : 17,476.17 = 6,999.09 : x
  2. Step 2: Convert to fraction form
    12,663.95/17,476.17 = 6,999.09/x
  3. Step 3: Cross multiply
    12,663.95x = 17,476.17 × 6,999.09
  4. Step 4: Simplify right side
    12,663.95x = 122,317,286.69
  5. Step 5: Solve for x
    x = 122,317,286.69/12,663.95
  6. Step 6: Final answer
    x = 9,658.70

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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.