Home / 13,669.78-20,504.38-3,808.80

Finding the Fourth Proportional to 13,669.78, 20,504.38 and 3,808.80

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Solution

The fourth proportional to 13,669.78, 20,504.38 and 3,808.80 is: 5,713.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.78 : 20,504.38 = 3,808.80 : x
  2. Step 2: Convert to fraction form
    13,669.78/20,504.38 = 3,808.80/x
  3. Step 3: Cross multiply
    13,669.78x = 20,504.38 × 3,808.80
  4. Step 4: Simplify right side
    13,669.78x = 78,097,017.14
  5. Step 5: Solve for x
    x = 78,097,017.14/13,669.78
  6. Step 6: Final answer
    x = 5,713.12

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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.