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Finding the Fourth Proportional to 18,954.94, 28,374.09 and 12,366.94

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Solution

The fourth proportional to 18,954.94, 28,374.09 and 12,366.94 is: 18,512.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.94 : 28,374.09 = 12,366.94 : x
  2. Step 2: Convert to fraction form
    18,954.94/28,374.09 = 12,366.94/x
  3. Step 3: Cross multiply
    18,954.94x = 28,374.09 × 12,366.94
  4. Step 4: Simplify right side
    18,954.94x = 350,900,668.58
  5. Step 5: Solve for x
    x = 350,900,668.58/18,954.94
  6. Step 6: Final answer
    x = 18,512.36

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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.