Home / 13,709.13-20,563.62-3,320.88

Finding the Fourth Proportional to 13,709.13, 20,563.62 and 3,320.88

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Solution

The fourth proportional to 13,709.13, 20,563.62 and 3,320.88 is: 4,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.13 : 20,563.62 = 3,320.88 : x
  2. Step 2: Convert to fraction form
    13,709.13/20,563.62 = 3,320.88/x
  3. Step 3: Cross multiply
    13,709.13x = 20,563.62 × 3,320.88
  4. Step 4: Simplify right side
    13,709.13x = 68,289,314.39
  5. Step 5: Solve for x
    x = 68,289,314.39/13,709.13
  6. Step 6: Final answer
    x = 4,981.30

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1.5x scale

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.