Home / 12,911.38-19,370.30-3,677.38

Finding the Fourth Proportional to 12,911.38, 19,370.30 and 3,677.38

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Solution

The fourth proportional to 12,911.38, 19,370.30 and 3,677.38 is: 5,516.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.38 : 19,370.30 = 3,677.38 : x
  2. Step 2: Convert to fraction form
    12,911.38/19,370.30 = 3,677.38/x
  3. Step 3: Cross multiply
    12,911.38x = 19,370.30 × 3,677.38
  4. Step 4: Simplify right side
    12,911.38x = 71,231,953.81
  5. Step 5: Solve for x
    x = 71,231,953.81/12,911.38
  6. Step 6: Final answer
    x = 5,516.99

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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.