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Finding the Fourth Proportional to 18,672.14, 28,019.10 and 6,993.56

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Solution

The fourth proportional to 18,672.14, 28,019.10 and 6,993.56 is: 10,494.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.14 : 28,019.10 = 6,993.56 : x
  2. Step 2: Convert to fraction form
    18,672.14/28,019.10 = 6,993.56/x
  3. Step 3: Cross multiply
    18,672.14x = 28,019.10 × 6,993.56
  4. Step 4: Simplify right side
    18,672.14x = 195,953,257.00
  5. Step 5: Solve for x
    x = 195,953,257.00/18,672.14
  6. Step 6: Final answer
    x = 10,494.42

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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.