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Finding the Fourth Proportional to 12,663.41, 17,476.12 and 7,629.21

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Solution

The fourth proportional to 12,663.41, 17,476.12 and 7,629.21 is: 10,528.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.41 : 17,476.12 = 7,629.21 : x
  2. Step 2: Convert to fraction form
    12,663.41/17,476.12 = 7,629.21/x
  3. Step 3: Cross multiply
    12,663.41x = 17,476.12 × 7,629.21
  4. Step 4: Simplify right side
    12,663.41x = 133,328,951.32
  5. Step 5: Solve for x
    x = 133,328,951.32/12,663.41
  6. Step 6: Final answer
    x = 10,528.68

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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.