Home / 13,673.28-20,509.68-3,813.12

Finding the Fourth Proportional to 13,673.28, 20,509.68 and 3,813.12

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Solution

The fourth proportional to 13,673.28, 20,509.68 and 3,813.12 is: 5,719.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.28 : 20,509.68 = 3,813.12 : x
  2. Step 2: Convert to fraction form
    13,673.28/20,509.68 = 3,813.12/x
  3. Step 3: Cross multiply
    13,673.28x = 20,509.68 × 3,813.12
  4. Step 4: Simplify right side
    13,673.28x = 78,205,871.00
  5. Step 5: Solve for x
    x = 78,205,871.00/13,673.28
  6. Step 6: Final answer
    x = 5,719.61

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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.