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Finding the Fourth Proportional to 12,252.90, 18,342.90 and 10,940.70

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Solution

The fourth proportional to 12,252.90, 18,342.90 and 10,940.70 is: 16,378.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,252.90 : 18,342.90 = 10,940.70 : x
  2. Step 2: Convert to fraction form
    12,252.90/18,342.90 = 10,940.70/x
  3. Step 3: Cross multiply
    12,252.90x = 18,342.90 × 10,940.70
  4. Step 4: Simplify right side
    12,252.90x = 200,684,166.03
  5. Step 5: Solve for x
    x = 200,684,166.03/12,252.90
  6. Step 6: Final answer
    x = 16,378.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.