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Finding the Fourth Proportional to 12,531.69, 18,654.30 and 12,344.82

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Solution

The fourth proportional to 12,531.69, 18,654.30 and 12,344.82 is: 18,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.69 : 18,654.30 = 12,344.82 : x
  2. Step 2: Convert to fraction form
    12,531.69/18,654.30 = 12,344.82/x
  3. Step 3: Cross multiply
    12,531.69x = 18,654.30 × 12,344.82
  4. Step 4: Simplify right side
    12,531.69x = 230,283,975.73
  5. Step 5: Solve for x
    x = 230,283,975.73/12,531.69
  6. Step 6: Final answer
    x = 18,376.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.