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Finding the Fourth Proportional to 18,881.60, 28,334.72 and 7,194.92

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Solution

The fourth proportional to 18,881.60, 28,334.72 and 7,194.92 is: 10,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.60 : 28,334.72 = 7,194.92 : x
  2. Step 2: Convert to fraction form
    18,881.60/28,334.72 = 7,194.92/x
  3. Step 3: Cross multiply
    18,881.60x = 28,334.72 × 7,194.92
  4. Step 4: Simplify right side
    18,881.60x = 203,866,043.62
  5. Step 5: Solve for x
    x = 203,866,043.62/18,881.60
  6. Step 6: Final answer
    x = 10,797.07

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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.