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Finding the Fourth Proportional to 18,994.68, 28,499.22 and 7,898.52

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Solution

The fourth proportional to 18,994.68, 28,499.22 and 7,898.52 is: 11,850.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.68 : 28,499.22 = 7,898.52 : x
  2. Step 2: Convert to fraction form
    18,994.68/28,499.22 = 7,898.52/x
  3. Step 3: Cross multiply
    18,994.68x = 28,499.22 × 7,898.52
  4. Step 4: Simplify right side
    18,994.68x = 225,101,659.15
  5. Step 5: Solve for x
    x = 225,101,659.15/18,994.68
  6. Step 6: Final answer
    x = 11,850.77

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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.