Home / 13,709.63-20,564.51-3,321.38

Finding the Fourth Proportional to 13,709.63, 20,564.51 and 3,321.38

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Solution

The fourth proportional to 13,709.63, 20,564.51 and 3,321.38 is: 4,982.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.63 : 20,564.51 = 3,321.38 : x
  2. Step 2: Convert to fraction form
    13,709.63/20,564.51 = 3,321.38/x
  3. Step 3: Cross multiply
    13,709.63x = 20,564.51 × 3,321.38
  4. Step 4: Simplify right side
    13,709.63x = 68,302,432.79
  5. Step 5: Solve for x
    x = 68,302,432.79/13,709.63
  6. Step 6: Final answer
    x = 4,982.08

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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.