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Finding the Fourth Proportional to 12,188.99, 18,283.48 and 2,954.99

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Solution

The fourth proportional to 12,188.99, 18,283.48 and 2,954.99 is: 4,432.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.99 : 18,283.48 = 2,954.99 : x
  2. Step 2: Convert to fraction form
    12,188.99/18,283.48 = 2,954.99/x
  3. Step 3: Cross multiply
    12,188.99x = 18,283.48 × 2,954.99
  4. Step 4: Simplify right side
    12,188.99x = 54,027,500.57
  5. Step 5: Solve for x
    x = 54,027,500.57/12,188.99
  6. Step 6: Final answer
    x = 4,432.48

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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.