Home / 19,298.72-28,942.09-6,815.87

Finding the Fourth Proportional to 19,298.72, 28,942.09 and 6,815.87

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Solution

The fourth proportional to 19,298.72, 28,942.09 and 6,815.87 is: 10,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,298.72 : 28,942.09 = 6,815.87 : x
  2. Step 2: Convert to fraction form
    19,298.72/28,942.09 = 6,815.87/x
  3. Step 3: Cross multiply
    19,298.72x = 28,942.09 × 6,815.87
  4. Step 4: Simplify right side
    19,298.72x = 197,265,522.97
  5. Step 5: Solve for x
    x = 197,265,522.97/19,298.72
  6. Step 6: Final answer
    x = 10,221.69

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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.