Home / 13,666.50-20,499.39-3,805.38

Finding the Fourth Proportional to 13,666.50, 20,499.39 and 3,805.38

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Solution

The fourth proportional to 13,666.50, 20,499.39 and 3,805.38 is: 5,707.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.50 : 20,499.39 = 3,805.38 : x
  2. Step 2: Convert to fraction form
    13,666.50/20,499.39 = 3,805.38/x
  3. Step 3: Cross multiply
    13,666.50x = 20,499.39 × 3,805.38
  4. Step 4: Simplify right side
    13,666.50x = 78,007,968.72
  5. Step 5: Solve for x
    x = 78,007,968.72/13,666.50
  6. Step 6: Final answer
    x = 5,707.97

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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.