Home / 18,956.68-28,438.37-6,473.78

Finding the Fourth Proportional to 18,956.68, 28,438.37 and 6,473.78

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Solution

The fourth proportional to 18,956.68, 28,438.37 and 6,473.78 is: 9,711.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956.68 : 28,438.37 = 6,473.78 : x
  2. Step 2: Convert to fraction form
    18,956.68/28,438.37 = 6,473.78/x
  3. Step 3: Cross multiply
    18,956.68x = 28,438.37 × 6,473.78
  4. Step 4: Simplify right side
    18,956.68x = 184,103,750.94
  5. Step 5: Solve for x
    x = 184,103,750.94/18,956.68
  6. Step 6: Final answer
    x = 9,711.81

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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.