Home / 13,709.25-20,563.88-3,321

Finding the Fourth Proportional to 13,709.25, 20,563.88 and 3,321

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Solution

The fourth proportional to 13,709.25, 20,563.88 and 3,321 is: 4,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.25 : 20,563.88 = 3,321 : x
  2. Step 2: Convert to fraction form
    13,709.25/20,563.88 = 3,321/x
  3. Step 3: Cross multiply
    13,709.25x = 20,563.88 × 3,321
  4. Step 4: Simplify right side
    13,709.25x = 68,292,628.88
  5. Step 5: Solve for x
    x = 68,292,628.88/13,709.25
  6. Step 6: Final answer
    x = 4,981.50

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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.